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April 28, 2014
Security Information and Event Management (SIEM) is a term coined by Gartner in 2005 to describe technology used to monitor and help manage user and service privileges, directory services and other system configuration changes; as well as providing log auditing and review and incident response.
The core capabilities of SIEM technology are the broad scope of event collection and the ability to correlate and analyze events across disparate information sources. Simply put, SIEM technology collects log and security data from computers, network devices and applications on the network to enable alerting, archiving and reporting.
Once log and security data has been received, you can:
Logs from firewalls and IDS/IPS sensors are useful to uncover external threats; logs from e-mail servers, proxy servers can help detect phishing attacks; logs from badge and thumbprint scanners are used to detect physical access
Computers, network devices and application logs are used to develop a trail of activity across the network by any user but especially users with high privileges
Most enterprises have critical data repositories in files/folder /databases and these are attractive targets for attackers. By monitoring all server and db resource access, security is improved.
With all logs and security data in one place, an especially useful benefit is the ability to correlate user activity across the network.
Often the source of funding for SIEM, when properly setup, auditor on-site time can be reduced by up to 90%; more importantly, compliance is to the spirit of the law rather than merely a check-the-box exercise
Answer Who, What, When, Where questions. Such questions are the heart of forensic activities and critical to draw valuable lessons.
SIEM technology is routinely cited as a basic best practice by every regulatory standard and its absence has been regularly shown as a glaring weakness in every data breach post mortem.
Want the benefit but not the hassle? Consider SIEM Simplified, our service where we do the disciplined blocking and tackling which forms the core of any security or compliance regime.
April 16, 2014
Analyzing all the login and pre-authentication failures within your organization can be tedious. There are thousands of login failures generated for several reasons. Here we will discuss the different event IDs and error codes and how you can simplify the login failure review process.
April 15, 2014
The typical SIEM implementation suffers from TMI, TLA (Too Much Information, Too Little Analysis). And if any organization that’s recently been in the news knows this, it’s the National Security Agency (NSA). The Wall Street Journal carried this story quoting William Binney, who rose through the ranks at the National Security Agency (NSA) over a 30 year career, retiring in 2001. “The NSA knows so much it cannot understand what it has,” Binney said. “What they are doing is making themselves dysfunctional by taking all this data.”
Most SIEM implementations start at this premise – open the floodgates, gather everything because we are not sure what we are specifically looking for, and more importantly, the auditors don’t help and the regulations are vague and poorly worded.
Lt Gen Clarence E. McKnight is the former head of the Signal Corps and opined that “The issue is a straightforward one of simple ability to manage data effectively in order to provide our leaders with actionable information. Too much raw data compromises that ability. That is all there is to it.”
A presidential panel recently recommended the NSA shut down its bulk collection of telephone call records of all Americans. It also recommended creation of “smart software” to sort data as it is collected, rather than accumulate vast troves of information for sorting out later. The reality is that the collection becomes an end in itself, and the sorting out never gets done.
The NSA may be a large, powerful bureaucracy, intrinsically resistant to change, but how about your organization? If you are seeking a way to get real value out of SIEM data, consider co-sourcing that problem to a team that does that for a living. SIEM Simplified was created for just that purpose. Switch from TMI, TLA (Too Much Information, Too Little Analysis) to JEI, JEA (Just Enough Information, Just Enough Analysis).
April 11, 2014
The usage of OpenSSL in EventTracker v7.5 is NOT vulnerable to heartbleed.
A lot of attention has focused on CVE-2014-0160, the Heartbleed vulnerability in OpenSSL. According to http://heartbleed.com, OpenSSL 0.9.8 is NOT vulnerable.
The EventTracker Windows Agent uses OpenSSL indirectly if the following options are enabled and used:
1) Send Windows events as syslog messages AND use the FTP server option to transfer non real-time events to a FTP server. To support this mode of operation, WinSCP.exe v4.2.9 is distributed as part of the EventTracker Windows Agent. This version of WinSCP.exe is compiled with OpenSSL 0.9.8, as documented in http://winscp.net/eng/docs/history_old (v4.2.6 onwards). Accordingly, the EventTracker Windows Agent is NOTvulnerable.
2) Configuration Assessment (SCAP). This optional feature uses ovaldi.exe v5.8 Build 2 which in turn includes OpenLDAP v2.3.27 as documented in the OVALDI-README distributed with the EventTracker install package. This version of OpenLDAP uses OpenSSL v0.9.8c which is NOT vulnerable.
April 10, 2014
Top 5 reasons IT Admins love logs:
1) Answer the ‘W’ questions
Who, what, where and when; critical files, logins, USB inserts, downloads…see it all
2) Cut ’em off at the pass, ke-mo sah-bee
Get an early warning of the railroad jumping off track. It’s what IT Admins do.
3) Demonstrate compliance
Don’t even try to demonstrate compliance until you get a log management solution in place. Reduce on-site auditor time by 90%.
4) Get a life
Want to go home on time and enjoy the weekend? How about getting proactive instead of reactive?
5) Logs tell you what users don’t
“It wasn’t me. I didn’t do it.” Have you heard this before? Logs don’t lie.
See EventTracker in action!
Join our next live demo April 8th at 2:00 p.m. EST.