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October 07, 2015
The news is rife with stories on “advanced” and “persistent” attacks, in the same way as exotic health problems like Ebola. The reality is that you are much more likely to come down with the common cold than Ebola. Thus, it makes more sense to pay close attention to what the Center for Disease Control has to say about it than to stockpile Ebola serum.
In similar vein, how good is your organization in fighting basic, commodity attacks?
It is true that the scary monsters called 0-day, advanced/persistent attacks and state sponsored superhackers are real. But before worrying about these, how are you set up for traditional intrusion attempts that use (5+) year old tools, tactics and exploits? After all, the vast majority of successful attacks are low tech and old school.
Want to rapidly improve your security maturity? Consider SIEM Simplified, our surprisingly affordable service that can protect you from 90% of the attacks for 10% of the do-it-yourself cost.
September 30, 2015
The Riddler is one of Batman’s enduring enemies who takes delight in incorporating riddles and puzzles into his criminal plots—often leaving them as clues for the authorities and Batman to solve.
Question: When is a door, not a door?
Answer: When it’s ajar.
So riddle me this, Batman: When is an alert not an alert?
EventTracker users know that one of its primary functions is to apply built-in knowledge to reduce the flood of all security/log data to a much smaller stream of alerts. However, in most cases, without applying local context, this is still too noisy, so a risk score is computed which factors in the asset value and CVSS score of the source.
This allows us to separate “alerts” into different priority levels. The broad categories are:
And so, there are alerts and there are alerts. Over-reacting to awareness or compliance alerts will drain your energy and eventually sap your enthusiasm, not to mention cost you in real terms. Under-reacting to actionable alerts will also hurt you by inaction.
Can your SIEM differentiate between actionable and awareness alerts?
Find out more here.
September 16, 2015
The “kill chain” is a military concept related to the structure of an attack. In the InfoSec area, this concept is a way of modeling intrusions on a computer network.
Threats occur in up to seven stages. Not all threats need to use every stage, and the actions available at each stage can vary, giving an almost unlimited diversity to attack sets.
Of course, some of the steps can happen outside the defended network, and in those cases, it may not be possible or practical to identify or counter. However, the most common variety of attack is unstructured in nature and originates from external sources. These use scripts or commonly available cracking tools that are widely available. Such attacks are identified by many techniques including:
Evidence of such activities is a pre-cursor to an attack. If defenders observe the activities from external sources, then it is important to review what the targets are. Often times, these can be uncovered by a penetration test. Repeated attempts against specific targets are a clue.
A defense-in-depth strategy gives defenders multiple clues about such activities. These include IDS systems that detect attack signatures, logs showing the activities and vulnerability scans that identify weaknesses.
To be sure, defending requires carefully orchestrated expertise. Feeling overwhelmed? Take a look at our SIEM Simplified offering where we can do the heavy lifting.
September 16, 2015
We hear a lot about tracking privileged access today because privileged users like Domain Admins can do a lot of damage. But more importantly, if their accounts are compromised the attacker gets full control of your environment. In line with this concern, many security standards and compliance documents recommend tracking changes to privileged groups like Administrators, Domain Admins and Enterprise Admins in Windows, and related groups and roles in other applications and platforms.
September 09, 2015
To defend against an attacker, you must know him and his methods. The typical attack launched on an IT infrastructure can be thought of in three stages.
The villain lures the unsuspecting victim to install malware. This can be done in a myriad of ways: by sending an attachment from an apparently trustworthy source, causing a drive by infection through a website hosting malware, or via a USB drive. Attackers target the weakest link, the less guarded desktop or a test system. Frontal assaults against heavily fortified and carefully watched servers are not practical.
Once installed, the malware usually copies itself to multiple spots to deter eradication and it can possibly “phone home” for further instructions. Malware usually lurks in the background, trying to obtain passwords or system lists to further enable Part 2.
As a means to deter removal, malware will move laterally, copying itself to other machines/locations. This movement is also often from peripheral to more central systems (e.g., from workstations to file shares).
Having patiently gathered up (usually zip or rar) secrets (intellectual property, passwords, credit card info, PII, etc.), the malware (or attacker)now sends the data outside the network back to the attacker.
How do you defend yourself against this? A SIEM solution can help, or a managed SIEM solution if you are short on expertise.
September 03, 2015
The (toxic) term “outsourcing” has long been vilified as the substitution of onshore jobs with cheaper offshore people. As noted here, outsourcing, by and large, has really always been about people. The story of outsourcing to-date is of service providers battling it out to deliver people-based services more productively, promising delights of delivery beyond merely doing the existing stuff significantly cheaper and a bit better.
August 26, 2015
Quick, take a look at these four log entries
Any idea what they mean?
No? Maybe you need a Log Whisperer — someone who understands these things.
Why, you ask?
Think security — aren’t these important?
Actually #3 and #4 are a big deal and you should be jumping on them, whereas #1 and #2 are routine — nothing to get excited about.
Here is what they mean:
Log Whisperers are the heart of our SIEM Simplified. They are the experts who review logs, determine what they mean and provide remediation recommendations in simple, easy to understand language.
Not to be confused with these guys.
And no, they don’t look like Robert Redford either. You are thinking about the Horse Whisperer.
August 19, 2015
For many years now, the security industry has become somewhat reliant on ‘indicators of compromise’ (IoC) to act as clues that an organization has been breached. Every year, companies invest heavily in digital forensic tools to identify the perpetrators and which parts of the network were compromised in the aftermath of an attack.
All too often, businesses are realizing that they are the victims of a cyber attack once it’s too late. It’s only after an attack that a company finds out what made them vulnerable and what they must do to make sure it doesn’t happen again.
This reactive stance was never useful to begin with and given the threat landscape, is totally undone as described by Ben Rossi.
Given the importance of identifying these critical indicators of attack (IoAs), here are eight common attack activities that IT departments should be tracking in order to gain the upper hand in today’s threat landscape.
Here are three IoAs that are both meaningful and relatively easy to detect:
Can you detect out-of-ordinary or new behavior? To quote the SANS Institute…Know Abnormal to fight Evil. Read more here.
August 17, 2015
There’s plenty of interest in all kinds of advanced security technologies like threat intelligence, strong/dynamic authentication, data loss prevention and information rights management. However, so many organizations still don’t know that the basic indicators of compromise on their network are new processes and modified executables.
August 05, 2015
What did the 2015 Verizon DBIR show us?
• 200+ days on average before persistent attackers are discovered within the enterprise network
• 60%+ breaches are reported by a third party
• 100% of breached networks were up to date on Anti Virus
We’ve got detection deficit disorder.
And it’s costing us. Direly!
Think of the time and money spent in detecting, with some degree of confidence, the location of Osama Bin Laden. Then think of the time and money to dispatch Seal Team 6 on the mission. Detection took ten years and cost hundreds of millions of dollars while remediation took 10 days and a few million dollars.
The same situation is happening in your network. You have for example 5,000 endpoints and of those, maybe 5 are compromised as you’re reading this. But which endpoints are compromised? How do you get actionable intelligence so that you can dispatch your own Seal Team 6?
This is the problem, EventTracker 8 was designed to address. Continuous digital forensics data collection using purpose built sensors. The machine learning at the EventTracker Console, sifts through collected data to identify possible malware, lateral movement and exfiltration of data. The processes are all backed by experts of the SIEM Simplified service.
July 30, 2015
The gap between the ‘time to compromise’ and the ‘time to discover’ is the detection deficit. According to Verizon DBIR, the trend lines of these have been diverging significantly in the past few years. Worse yet, the data shows that attackers are able to compromise the victim in days but thereafter are able to spend an average of 243 days undetected within the enterprise network before they are exposed. More often than not, this is happening by a third party. This trend points to an ongoing detection deficit disorder. The suggestion is that defenders struggle to uncover the indicators of compromise. While the majority of these attacks are via malware inserted to the victim’s system by a variety of methods, there is also theft of credentials that make it look like an inside job. To overcome the detection deficit, defenders must look for other common evidence of compromise. These include: command and control activity, suspicious network traffic, file access and unauthorized use of valid credentials. EventTracker 8 includes features incorporated into our Windows sensor that provide continuous forensics to look for evidence of compromise.” target=”_blank”>Verizon VBIR, the trend lines of these have been diverging significantly in the past few years.
Worse yet, the data shows that attackers are able to compromise the victim in days but thereafter are able to spend an average of 243 days undetected within the enterprise network before they are exposed. More often than not, this is happening by a third party.
This trend points to an ongoing detection deficit disorder. The suggestion is that defenders struggle to uncover the indicators of compromise.
While the majority of these attacks are via malware inserted to the victim’s system by a variety of methods, there is also theft of credentials that make it look like an inside job.
To overcome the detection deficit, defenders must look for other common evidence of compromise. These include: command and control activity, suspicious network traffic, file access and unauthorized use of valid credentials.
EventTracker 8 includes features incorporated into our Windows sensor that provide continuous forensics to look for evidence of compromise.
July 22, 2015
For some time, “We use an agent for that” was a death spell for many security tools while “agent-less” was the only game in town worth playing. Yes, people tolerate AV and device management agents, but that is where many organizations seemed to draw the line. And an agent just to collect logs? – You’ve got to be kidding!
In this blog from 2006, Richard Bejtlich pointed out, enterprise security teams should seek to minimize their exposure to endpoint agent vulnerabilities.
Lets not confuse the means with the end. The end is “security information/event monitoring,” while getting the logs is the means to the end. Whereas, the threatscape of 2015 is dominated by polymorphic, persistent malware (dropped by phishing and stolen credentials); where our current mission still remains to defend the network.
Malware doesn’t write logs but it does however leave behind trace evidence on the host. This is evidence that you can’t get by monitoring the network. In any case, the rise of https by default has limited the ability of the network monitor to peer inside the payload.
Thus the Agent Advantage or the Sensor Advantage if you prefer.
Endpoints have first hand information when it comes to non-signature based attacks. This includes processes, file accesses, configuration changes, network traffic, etc. This data is critical to early detection of malicious activity.
Is an “agent” just to collect logs not doing it for you? How about a “sensor” that gathers endpoint data critical to detect persistent cyber attacks? That is the EventTracker 8 sensor which incorporates DFIR and UBA.
July 14, 2015
Defense-in-depth pretty much secures and confirms the thought that every security technology has a place but are they really all created equal? Security is not a democratic process and no one is going to complain about security inequality if you are successful at halting breaches. So I think we need to acknowledge a few things. Right now the bad guys are winning on the endpoint – in particular on the workstations. One way or another the attackers are getting users to execute bad
July 13, 2015
Attacks on our IT network are a daily fact of life. As a defender, its job is to make the attackers life harder and to deter them to go elsewhere. Any attack, almost inevitably causes some type of host artifact to be left behind.
If defenders are able to quickly uncover the presence of host artifacts, it may be possible to disrupt the attack, thereby causing pain to the attacker. Such artifacts are present on the target/host and usually not visible to network monitors.
Many modern attacks use malware that is dropped and executed on the target machine or hollows out existing valid processes to spawn child processes that can be hijacked.
A common tactic when introducing malware on a target is to blend in. If the legitimate process is called svchost.exe, then the malware may be called svhost.exe. Another tactic is to maintain the same name as the legitimate EXE but have it executed from a different path.
EventTracker 8 includes a new module called Advanced Security Analytics which provides tools to help automate the detection of such attacks. When any process is launched, EventTracker gathers various bits of information about the EXE including, its hash, its full path name, its parent process, the publisher name and if it’s digitally signed or not. Then at the EventTracker Console, if the hash is being seen for the first time, it gets compared to lists of known malware from sources such as virustotal.com, virusshare.com etc. Analysts can also look and see if the EXE was digitally signed by the publisher name and source to determine if further investigation is warranted.
When tuned properly, this capability results in low false positive and can be useful to rapidly detect attackers.
Want more information on EventTracker 8? Click here.
July 06, 2015
It’s clear that we are now working under the assumption of a breach. The challenge is to find the attacker before they cause damage.
Once attackers gain a beach head within the organization, they pivot to other systems. The Verizon DBIR shows that compromised credentials make up a whopping 76% of all network incursions.
However, the traditional IT security tools deployed at the perimeter, used to keep the bad guys out, are helpless in these cases. Today’s complex cyber security attacks require a different approach.
EventTracker 8 includes an advanced security analytic package which includes behavior rules to self-learn user location affinity heuristics and use this knowledge to pinpoint suspicious user activity.
In a nutshell, EventTracker learns typical user behavior for interactive login. Once a baseline of behavior is established, out of ordinary behavior is identified for investigation. This is done in real-time and across all enterprise assets.
For example if user susan typically logs into wks5 but now because her credentials are stolen, they are used to login to server6, this would be identified as out-of-ordinary and tagged for closer inspection.
EventTracker 8 has new features designed to support security analysts involved in Digital Forensics and Incident Response.
June 24, 2015
A key element of the PCI-DSS standard is Requirement 10: Track and monitor all access to network resources and cardholder data. Logging mechanisms and the ability to track user activities are critical in preventing, detecting and minimizing the impact of a data compromise. The presence of logs in all environments allows thorough tracking, alerting and analysis when something does go wrong. Determining the cause of a compromise is very difficult, if not impossible, without system activity logs.
However the 2014 Verizon PCI Report is billed as an inside look at the business need for protecting payment card information says: “Only 9.4% of organizations that our RISK team investigated after a data breach was reported were compliant with Requirement 10. By comparison, our QSAs found 31.7% compliance with Requirement 10. This suggests a correlation between the lack of effective log management and the likelihood of suffering a security breach.”
Here is a side benefit of paying attention to compliance: Consistent and complete audit trails can also significantly reduce the cost of a breach. A large part of post-compromise cost is related to the number of cards thought to be exposed. Lack of conclusive log information reduces the forensic investigator’s ability to determine whether the card data in the environment was exposed only partially or in full.
In other words, when (not if) you detect the breach, having good audit records will reduce the cost of the breach.
Organizations can’t prevent or address a breach unless they can detect it. Active monitoring of the logs from their cardholder data environments enables organizations to spot and respond to suspected data breaches much more quickly.
Organizations generally find enterprise log management hard, in terms of generating logs (covered in controls 10.1 and 10.2), protecting them (10.5), reviewing them (10.6), and archiving them (10.7).
Is this you? Here is how you spell relief – SIEM Simplified.
June 19, 2015
This is a classic chicken/egg question but it’s too often thought to be the same. Take it from Merriam – Webster:
Compliance: (1a) the act or process of complying to a desire, demand, proposal, or regimen or to coercion. (1b) conformity in fulfilling official requirements. (2) a disposition to yield to others.
Security: (1) the quality or state of being secure. (4a) something that secures : protection. (4b1) measures taken to guard against espionage or sabotage, crime, attack, or escape. (4b2) an organization or department whose task is security.
Clearly they are not the same. Compliance means you meet a technical or non-technical requirement and periodically someone verifies that you have met them.
Compliance requirements are established by standards bodies, who obviously do not know your network. They are established for the common good because of industry wide concerns that information is not protected, usually because the security is poor. When you see an emphasis of compliance over security, it’s too often because the organization does not want to take the time to ensure that the network and information is secure, so they rely on compliance requirements to feel better about their security.
The problem with that is that it gives a false sense of hope. It gives the impression that if you check this box; everything is going to be ok. Obviously this is far from true, with examples like Sony, Target, TJMaxx and so many other breaches. Although there are implementations of compliance that will make you more secure, you cannot base your companies’ security policy on a third party’s compliance requirements.
So what comes first? Wrong question! Let’s rephrase – there needs to be a healthy relationship between the two but one cannot substitute one for the other.
June 10, 2015
Have you noticed the number of vendors that have jumped on the “Threat Intelligence” bandwagon recently?
Threat Intel is the hot commodity with paid sources touting their coverage and timeliness while open sources tout the size of their lists. The FBI shares its info via Infraguard while many other ISACs are popping up across industry verticals allowing many large companies to compile internal data.
All good right? More is better, right? Actually, not quite.
Look closely. You are confusing “intelligence” with “data”.
As the Lt Commander of the Starship Enterprise would tell you, Data is not Intelligence. In this case, intelligence is really problem solving. As defenders, we want this data in order to answer “Who is attacking our assets and how?” Which would lead to coherent defense.
The steps to use Threat Data are easily explained:
1) Compare observations on the local network against the threat data.
2) Alert on matches.
Now comes the hard part…
3) Examine and validate the alert to decide if remediation is needed. This part is difficult to automate and really the crux of converting threat data to threat intelligence. To do this effectively would require human skills that combine both expert knowledge of the modern ThreatScape with knowledge of the network architecture.
This last part is where most organizations come up hard against ground reality. The fact is thatdetailed knowledge of the internal network architecture is more common within an organization (more or less documented but present in some fashion/degree), than the expert knowledge of the modern ThreatScape and the contours/limitations of the threat data.
You could, of course hire and dedicate staff to perform this function but a) such staff are hard to come by and b) budget for this is even harder.
Consider a co-managed solution like SIEM Simplified where the expert knowledge of the modern ThreatScape in the context of your network is provided by an external group. When this is combined with your internal resources to co-manage the problem, it can result in improved coverage at an affordable price point.
June 03, 2015
Six ways to shoot yourself with SIEM technology:
1) Dont plan; just jump in
2) Have no defined scope or use cases; whatever
3) Confuse SIEM with Log Management
4) Monitor noise; apply no filters
5) Don’t correlate with any other technologies eg IDS, Vulnerability scanner, Active Directory
6) Staff poorly or not at all
For grins, here’s how programmers shoot themselves in the foot:
Find a gun, it falls apart. Put it back together, it falls apart again. You try using the .GUN Framework, it falls apart. You stab yourself in the foot instead.
You try to shoot yourself in the foot, but find out the the gun is actually a howitzer cannon.
You accidentally create a dozen clones of yourself and shoot them all in the foot. Emergency medical assistance is impossible since you can’t tell which are bitwise copies and which are just pointing at others and saying, “That’s me, over there.”
You’ve perfected a robust, rich user experience for shooting yourself in the foot. You then find that bullets are disabled on your gun.
SELECT @ammo:=bullet FROM gun WHERE trigger = ‘PULLED’;
INSERT INTO leg (foot) VALUES (@ammo);
foot.c foot.h foot.o toe.c toe.o
% rm * .o
rm: .o: No such file or directory
Click here for the Top 6 Uses of SIEM.
May 20, 2015
Just after a new security vulnerability surfaced Wednesday, many tech outlets started comparing it with HeartBleed, the serious security glitch uncovered last year that rendered communications with many well-known web services insecure, potentially exposing millions of plain-text passwords.
But don’t panic. Though the recent vulnerability has a more terrific name than HeartBleed, it is not going to cause as much danger as HeartBleed did.
Dubbed VENOM, standing for Virtualized Environment Neglected Operations Manipulation, is a virtual machine security flaw uncovered by security firm CrowdStrike that could expose most of the data centers to malware attacks, but in theory.
Yes, the risk of Venom vulnerability is theoretical as there is no real-time exploitation seen yet, while, on the other hand, last year’s HeartBleed bug was practically exploited by hackers an unknown number of times, leading to the theft of critical personal information.
Now let’s know more about Venom:
Venom (CVE-2015-3456) resides in the virtual floppy drive code used by a several number of computer virtualization platforms that if exploited…
…could allow an attacker to escape from a guest ‘virtual machine’ (VM) and gain full control of the operating system hosting them, as well as any other guest VMs running on the same host machine.
According to CrowdStrike, this roughly decade-old bug was discovered in the open-source virtualization package QEMU, affecting its Virtual Floppy Disk Controller (FDC) that is being used in many modern virtualization platforms and appliances, including Xen, KVM, Oracle’s VirtualBox, and the native QEMU client.
Jason Geffner, a senior security researcher at CrowdStrike who discovered the flaw, warned that the vulnerability affects all the versions of QEMU dated back to 2004, when the virtual floppy controller was introduced at the very first.
However, Geffner also added that so far, there is no known exploit that could successfully exploit the vulnerability. Venom is critical and disturbing enough to be considered a high-priority bug.
Successful exploitation of Venom required:
For successful exploitation, an attacker sitting on the guest virtual machine would need sufficient permissions to get access to the floppy disk controller I/O ports.
When considering on Linux guest machine, an attacker would need to have either root access or elevated privilege. However on Windows guest, practically anyone would have sufficient permissions to access the FDC.
However, comparing Venom with Heartbleed is something of no comparison. Where HeartBleed allowed hackers to probe millions of systems, Venom bug simply would not be exploitable at the same scale.
Flaws like Venom are typically used in a highly targeted attack such as corporate espionage, cyber warfare or other targeted attacks of these kinds.
Did venom poison Clouds Services?
Potentially more concerning are most of the large cloud providers, including Amazon, Oracle, Citrix, and Rackspace, which rely heavily on QEMU-based virtualization are vulnerable to Venom.
However, the good news is that most of them have resolved the issue, assuring that their customers needn’t worry.
“There is no risk to AWS customer data or instances,” Amazon Web Services said in a statement.
Rackspace also said the flaw does affect a portion of its Cloud Servers, but assured its customers that it has “applied the appropriate patch to our infrastructure and are working with customers to remediate fully this vulnerability.”
Azure cloud service by Microsoft, on the other hand, uses its homemade virtualization hypervisor technology, and, therefore, its customers are not affected by Venom bug.
Meanwhile, Google also assured that its Cloud Service Platform does not use the vulnerable software, thus was never vulnerable to Venom.
Patch Now! Prevent yourself
Both Xen and QEMU have rolled out patches for Venom. If you’re running an earlier version of Xen or QEMU, upgrade and apply the patch.
Note: All versions of Red Hat Enterprise Linux, which includes QEMU, are vulnerable to Venom. Red Hat recommend its users to update their system using the commands, “yum update” or “yum update qemu-kvm.”
Once done, you must “power off” all your guests Virtual Machines for the update to take place, and then restart it to be on the safer side. Remember, only restarting without power off the guest operating system is not enough for the administrators because it would still use the old QEMU binary.
See more at Hacker News.
May 13, 2015
Q. What is worse than the attacks at Target, Home Depot, Michael’s, Dairy Queen, Sony, etc?
A. A disgruntled insider (think Edward Snowden)
A data breach has serious consequences both directly and indirectly. Lost revenue and a tarnished brand reputation both inflict harm long after incident resolution and post breach clean-up. Still, many organizations don’t take necessary steps to protect themselves from a potentially detrimental breach.
But, the refrain goes, “We don’t have the budget or the manpower or the buy in from senior management. We’re doing the best we can.”
How about going for some quick wins?
Quick wins provide solid risk reduction without major procedural, architectural or technical changes to an environment. Quick wins also provide such substantial and immediate risk reduction against very common attacks that most security-aware organizations prioritize these key controls.
1) Control the use of Administrator privilege
The misuse of administrative privileges is a primary method for attackers to spread inside a target enterprise. Two very common attacker techniques take advantage of uncontrolled administrative privileges. For example, a workstation user running as a privileged user, is fooled by simply surfing to a website hosting attacker content that can automatically exploit browsers. The file or exploit contains executable code that runs on the victim’s machine. Since the victim user’s account has administrative privileges, the attacker can take over the victim’s machine completely and install malware to find administrative passwords and other sensitive data.
2) Limit access to documents to employees based on the need to know
It’s important to limit permissions so employees only have access to the data necessary to perform their jobs. Steps should also be taken to ensure users with access to sensitive or confidential data are trained to recognize which files require more strict protection.
3) Evaluate your security tools – can they detect insider theft?
Whether it’s intentional or inadvertent, would you even know if someone inside your network compromised or leaked sensitive data?
4) Assess security skills of employees, provide training
The actions of people play a critical part in the success or failure of an enterprise. People fulfill important functions at every stage of the business function. Attackers are very conscious of these issues and use them to plan their exploitations by: carefully crafting phishing messages that look like routine and expected traffic to an unwary user; exploiting the gaps or seams between policy and technology; working within the time window of patching or log review; using nominally non-security-critical systems as jump points or bots….
5) Have an incident response plan
How prepared is your information technology (IT) department or administrator to handle security incidents? Many organizations learn how to respond to security incidents only after suffering attacks. By this time, incidents often become much more costly than needed. Proper incident response should be an integral part of your overall security policy and risk mitigation strategy.
A guiding principle of IT Security is “Prevention is ideal but detection is a must.”
Have you reduced your exposure?
May 06, 2015
This fundamental tradeoff between security, usability, and cost is critical. Yes, it is possible to have both security and usability, but at a cost, in terms of money, time and personnel. While making something both cost efficient and usable, or even making something secure and cost-efficient may not be very hard, it is however more difficult and time consuming to make something both secure and usable. This takes a lot of effort and thinking because security takes planning and resources.
As a system administrator, usability is at the top of their list. However, as a security administrator, security will be on top of their list – no surprise here really.
What if I tell you that the two job roles are orthogonal? What gets a sys admin bouquets, will get a security admin, brickbats and vice versa.
Oh and when we say “cheap” we mean in terms of effort – either by the vendor or by the user.
Security administrators face some interesting tradeoffs. Fundamentally, the choice to be made is between a system that is secure and usable, one that is secure and cheap or one that is cheap and usable. Unfortunately, we cannot have everything. The best practice is not to make the same person responsible for both security and system administration. The goals of those two tasks are far too often in conflict to make this a position that someone can become successful at.
April 29, 2015
On April 15, 2015, the PCI Security Standards Council (PCI SSC) announced the release of PCI DSS v3.1. This follows closely on the heels of PCI DSS 3.0, that just went into full effect on January 1, 2015. There is a three-year cycle between major updates of PCI DSS and, outside of that cycle, the standard can be updated to react to threats as needed.
The major driver of PCI DSS 3.1 is the industry’s conclusion that SSL version 3.0 is no longer a secure protocol and therefore must be addressed by the PCI DSS.
What happened to SSL?
The last-released version of encryption protocol to be called “SSL”—version 3.0—was superseded by “TLS,” or Transport Layer Security, in 1999. While weaknesses were identified in SSL 3.0 at that time, it was still considered safe for use up until October of 2014, when the POODLE vulnerability came to light. POODLE is a flaw in the SSL 3.0 protocol itself, so it’s not something that can be fixed with a software patch.
Any business software running SSL 2.0 or 3.0 must be reconfigured or upgraded.
Note: Most SSL/TLS deployments support both SSL 3.0 and TLS 1.0 in their default configuration. Newer software may support SSL 3.0, TLS 1.0, TLS 1.1 and TLS 1.2. In these cases the software simply needs to be reconfigured. Older software may only support SSL 2.0 and SSL 3.0 (if this is the case, it is time to upgrade).
How to detect SSL/TLS usage and version?
A vulnerability scan from EventTracker Vulnerability Assessment Service (ETVAS) or other scanner, will identify insecure implementations.
SSL/TLS is a widely deployed encryption protocol. The most common use of SSL/TLS is to secure websites (HTTPS), though it is also used to:
• Secure email in transit (SMTPS or SMTP with STARTTLS, IMAPS or IMAP with STARTTLS)
• Share files (FTPS)
• Secure connections to remote databases and secure remote network logins (SSL VPN)
SIEM Simplified customers
The EventTracker Control Center will have contacted you to correctly configure the Windows server instance hosting the EventTracker Manager Console, to comply with the guideline. You must upgrade or reconfigure all other vulnerable servers in your network.
If you subscribe to ETVAS, the latest vulnerability reports will highlight any servers that must be reconfigured along with detailed recommendations on how to do so.
April 22, 2015
Myth 1: Hardening a system makes it secure
Security is a process, to be evaluated on a constant basis. There is nothing that will put you into a “state of security.” Did you really think that simply applying some hardening guide to a system will make it secure?
Threats exploit unpatched vulnerabilities and not one of them would have been stopped by any security settings. Few settings can prevent your network from getting attacked through unpatched vulnerabilities.
Myth 2: If We Hide It, the Bad Guys Won’t Find It
Also known as security by obscurity, hiding the system doesn’t really help. For instance, turning off SSID broadcast in wireless networks. Not only will you now have a network that is non compliant with the standard, but your clients will also prefer a rogue network with the same name over the legitimate one. Oh, and it takes a few minutes to actually find the network anyway, given the proper tools. Another example is changing the banners on your Web site so the bad guys will not know it is running IIS. First, it is relatively simple to figure out what the Web site is running anyway. Second, most of the bad guys are not smart enough to do that, so they just try all the exploits, including the IIS ones. Yet another example is renaming the Administrator account. It is a matter of a couple of API calls to find the real name. Our favorite is when administrators use Group Policy to rename the Administrator account. They now have an account called “Janitor3;” with a comment of “Built in account for administering the computer/domain.” This is not really likely to fool anyone.
Myth 3: “High Security” Is an End-Goal for All Environments
High security, in the sense of the most restrictive security possible, is not for everyone. In some environments you are willing to break things in the name of protection that you are not willing to break in others.
Some systems are subjected to incredibly serious threats. If these systems get compromised, people will die, nations and large firms will go bankrupt, and society as we know it will collapse. Other systems contain far less sensitive information and thus need not be subjected to the same level of security. The protective measures that are used on the former are entirely inappropriate for the latter; yet we keep hearing that “high security” is some sort of end-goal toward which all environments should strive.
Safeguards should be applied in proportion to risk.
April 16, 2015
Is it possible to avoid security breaches? Judging from recent headlines, probably not. Victims range from startups like Kreditech, to major retailers like Target,to the US State Department and even the White House. Regardless of the security measures you have in place, it is prudent to assume you will suffer a breach at some point. Be sure to have a response plan in place — just in case.
April 15, 2015
In the next couple months, Congress will likely pass CISA, the Cybersecurity Information Sharing Act. The purpose is to “codify mechanisms for enabling cybersecurity information sharing between private and government entities, as well as among private entities, to better protect information systems and more effectively respond to cybersecurity incidents.”
Can it help? It’s interesting to note two totally opposing views.
Arguing that it will help is Richard Bejtlich of Brookings. His analogy is Threat intelligence, is in some ways like a set of qualified sales leads provided to two companies. The first has a motivated sales team, polished customer acquisition and onboarding processes, authority to deliver goods and services and quality customer support. The second business has a small sales team, or perhaps no formal sales team. Their processes are broken, and they lack authority to deliver any goods or services, which in this second case isn’t especially valuable. Now, consider what happens when each business receives a bundle of qualified sales leads. Which business will make the most effective use of their list of profitable, interested buyers? The answer is obvious, and there are parallels to the information security world.
Arguing that it won’t help at all is Robert Graham, the creator of BlackICE Guard. His argument is “CISA does not work. Private industry already has exactly the information sharing the bill proposes, and it doesn’t prevent cyber-attacks as CISA claims. On the other side, because of the false-positive problem, CISA does far more to invade privacy than even privacy advocates realize, doing a form of mass surveillance.”
In our view, Threat Intel is a new tool. It’s usefulness depends on the artisan wielding the tool. A poorly skilled user would get less value.
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April 08, 2015
On Jan 13, 2015, the U.S. White House published a set of legislative proposals on cyber security threat intelligence (TI) sharing between private and public entities. Given the breadth of cyber attacks across the Internet, the sharing of information between commercial entities and the US Government is increasingly critical. Absent sharing, first responders charged with cyber defense are at a disadvantage in detecting and responding to common attacks.
Should this cause a privacy concern?
Richard Bejtlich, senior fellow at Brookings says “Threat intelligence does not contain personal information of American citizens, and privacy can be maintained while learning about threats. Intelligence should be published in an automated, machine-consumable, standardized manner.”
The White House proposal uses the following definition:
“The term `cyber threat indicator’ means information —
(A) that is necessary to indicate, describe or identify–
(i) malicious reconnaissance, including communications that reasonably appear to be transmitted for the purpose of gathering technical information related to a cyber threat;
(ii) a method of defeating a technical or operational control;
(iii) a technical vulnerability;
(iv) a method of causing a user with legitimate access to an information system or information that is stored on, processed by, or transiting an information system inadvertently to enable the defeat of a technical control or an operational control;
(v) malicious cyber command and control;
(vi) any combination of (i)-(v).
(B) from which reasonable efforts have been made to remove information that can be used to identify specific persons reasonably believed to be unrelated to the cyber threat.”
If you take the above at face value, then a reasonable assumption is that these sorts of cyber threat indicators should not trigger privacy concerns, whether shared between the private sector and the government or within the private sector.
Of course, getting TI and using it effectively are completely different as discussed here. Bejtlich reminds us that “private sector organizations should focus first on improving their own defenses before expecting that government assistance will mitigate their security problems.”
Looking for an practical, cost effective way to shore up your defenses? SIEM Simplified is one way to go about it.
April 02, 2015
You may recall that back in 2012, then Secretary of Defense Leon Panetta warned of “a cyber Pearl Harbor; an attack that would cause physical destruction and the loss of life.”
This hasn’t quite come to pass has it? Is it dumb luck? Or are we just waiting for it to happen?
In his annual testimony about the intelligence community’s assessment of “global threats,” Director of National Intelligence James Clapper sounded a more nuanced and less hyperbolic tone. “Rather than a ‘cyber Armageddon’ scenario that debilitates the entire U.S. infrastructure, we envision something different,” he said, “We foresee an ongoing series of low-to-moderate level cyber attacks from a variety of sources over time, which will impose cumulative costs on U.S. economic competitiveness and national security.”
The reality is that the U.S. is being bombarded by cyber attacks of a smaller scale every day—and those campaigns are taking a toll.
Now the DNI also went on to say “Although cyber operators can infiltrate or disrupt targeted [unclassified] networks, most can no longer assume that their activities will remain undetected, nor can they assume that if detected, they will be able to conceal their identities. Governmental and private sector security professionals have made significant advances in detecting and attributing cyber intrusions.”
Alan Paller of the SANS Institute says “Those words translate directly to a simpler statement: ‘The weapons and other systems we operate today cannot be protected from cyber attack.’ Instead, as a nation, we have to put in place the people and support systems who can find the intruders and excise them fast.”
So then what capabilities do you have in this area given that the attacks are continuous and ongoing against your infrastructure?
Want to do something about it quickly and effectively? Consider SIEM Simplified our service offering that can take the heavy lift required to implement such monitoring programs off your hands.
March 25, 2015
A new and harmful Point-of-Sale (“POS”) malware has been identified by security researchers at Cisco’s Security Intelligence & Research Group. The team says it is more sophisticated and damaging than previous POS malware programs.
Nicknamed PoSeidon, the new malware family targets POS systems, infects machines and scrapes the memory for credit card information which it then exfiltrates to servers, primarily .ru TLD, for harvesting or resale.
When consumers use their credit or debit cards to pay for purchases from a retailer, they swipe their card through POS systems. Information stored on the magnetic stripe on the back of those cards is read and retained by the POS. If the information on that stripe is stolen, it can be used to encode the magnetic strip of a fake card, which is then used to make fraudulent purchases. POS malware and card fraud has been steadily rising, affecting large and small retailers. Target, one of the most visible victims of security breach involving access to its payment card data, incurred losses approximated at $162 million (before insurance recompense).
PoSeidon employs a technique called memory scraping in which the RAM of infected terminals are scanned for unencrypted strings which match credit card information. When PoSeidon take over a terminal, a loader binary is installed to allow the malware to remain on the target machine even during system reboots. The Loader then contacts a command and control server, and retrieves a URL which contains another binary, FindStr, to download and execute. FindStr scans the memory of the POS device and finds strings (hence its name) and installs a key logger which looks for number strings and keystrokes analogous to payment card numbers and sequences. CSS referred to the number sequences that begin with numbers generally used by Discover, Visa, MasterCard and American Express cards (6, 5, 4, and 3 respectively, as well as the number of digits following those numbers; 16 digits for the former three, 15 digits for the American Express card). This data is then encoded and sent to an exfiltration server.
A whitepaper for detecting and protecting from PoSeidon malware infection is also available from EventTracker.
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March 16, 2015
Sometimes we get hung up on event monitoring and forget about the “I” in SIEM which stands for information. Not forgetting Information is important because there are many sources of non-event security information that your SIEM should be ingesting and correlating with security events more than ever before. There’s at least 4 categories of security information that you can leverage in your SIEM to provide better analysis of security events
See EventTracker in action!
Join our next live demo August 6th at 2:00 p.m. EST.
Join our next EventTracker live product demo to see our award-winning SIEM solution in action. We’ll showcase the critical security features you need to protect your organization from threats, demonstrate how the built-in reporting streamlines compliance requirements, and answer any questions you have on the spot.
Our next live product demo of EventTracker is scheduled for Tuesday, August 6th at 2:00 p.m. EST.