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August 27, 2009
I came across this interesting (and scary if you are a business person) article in the Washington Post. In a nutshell pretty much every business banks electronically. Some cyber gangs in Eastern Europe have come up with a pretty clever method to swindle money from small and medium sized companies. They do a targeted email attack on the finance guys and get them to click on a bogus attachment – when they do so, key logging malware is installed that harvests electronic bank account passwords. These passwords are then used to transfer large sums of money to the bad guys.
The article is definitely worth a read for a number of reasons, but what I found surprising was first that businesses do not have the same protection from electronic fraud as consumers do so the banks don’t monitor commercial account activity as closely, and second, just how much this type of attack is happening. Turns out businesses only have 2 days to report fraudulent activity instead of a consumer’s 60 days so businesses that suffer a loss usually don’t recover their money.
My first reaction was to ring up our finance guys and tell them about the article. Luckily their overall feel was that since Marketing spent the money as quickly as the Company made it, we were really not too susceptible to this type of attack as we had no money to steal – an unanticipated benefit of a robust (and well paid, naturally!) marketing group. I did make note of this helpful point for use during budget and annual review time.
My other thought was how this demonstrated the usefulness of efforts like the Consensus Audit Guidelines from SANS. Sometime security personnel pooh-pooh the basics but you can make it lot harder on the bad guys with some pretty easy blocking and tackling activity. CAG Control 12 talks about monitoring for active and updated anti-virus and anti-spyware on all systems. Basic, but it really helps – remember a business does not have 60 days but 2. You can’t notice the malware a week after the signatures finally get updated.
There are a number of other activities that can also really help to prevent these attacks in advanced tools such as EventTracker such as change monitoring, tracking first time executable launch, monitoring the AV application has not been shut down and monitoring network activity for anomalous behavior, but that is a story for another day. If you can’t do it all, at least start with the obvious – you might not be safe, but you will be safer.
August 21, 2009
Today we continue our journey through the Consensus Audit Guidelines with a look at CAG 12 — Malware Defense. When people think about the pointy end of the stick for Malware prevention they typically think anti-virus, but log management can certainly improve your chances by adding defense in depth. We also examine some of the additional benefits log management provides.
August 12, 2009
Every drop in the business cycle brings out the ‘get more value for your money’ strategies. For IT this usually means either use the tools you have to solve a wider range of problems or buy a tool that with fast initial payback and can be used to solve a wide range of other problems. This series looks at how different log management tasks can be applied to solve a wider range of problems beyond the traditional compliance and security drivers so that companies can get more value for their IT money.
August 07, 2009
Today’s Consensus Audit Guideline Control is a good one for logs — account monitoring. Account monitoring should go well beyond simply having a process to get rid of invalid accounts. Today we look at tips and tricks on things to look for in your logs such as excessive failed access to folders or machines, inactive accounts becoming active and other outliers that are indicative of an account being high-jacked.
August 05, 2009
Today we look at CAG Control 10 — continuous vulnerability testing and remediation. For this control, vulnerability scanning tools like Rapid7 or Tenable are the primary solutions, so how do logs help here? The reality is that most enterprises can’t patch critical infrastructure on a constant basis. There is often a fairly lengthy gap between when you have a known vulnerability and when the fix is applied and so it becomes even more important to monitor logs for system access, anti-virus status, changes in configuration and more.
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