Thu Jan 31, 2013, 12:08 AM
Renew Deal (59,983 posts)
Employee outsources his work to China for 1/5th of his salary. Eventually gets caught.
Pretty ingenious scam this guy was running. I recommend reading the entire thing so you get full context.
With the New Year having arrived, it’s difficult not to reflect back on last year’s caseload. While the large-scale data breaches make the headlines and are widely discussed among security professionals, often the small and unknown cases are the ones that are remembered as being the most interesting from the investigators point of view. Every now and again a case comes along that, albeit small, still involves some unique attack vector – some clever and creative way that an attacker victimized an organization. It’s the unique one-offs, the ones that are different that often become the most memorable and most talked about amongst the investigators.
Such a case came about in 2012. The scenario was as follows. We received a request from a US-based company asking for our help in understanding some anomalous activity that they were witnessing in their VPN logs. This organization had been slowly moving toward a more telecommuting oriented workforce, and they had therefore started to allow their developers to work from home on certain days. In order to accomplish this, they’d set up a fairly standard VPN concentrator approximately two years prior to our receiving their call. In early May 2012, after reading the 2012 DBIR, their IT security department decided that they should start actively monitoring logs being generated at the VPN concentrator. (As illustrated within our DBIR statistics, continual and pro-active log review happens basically never – only about 8% of breaches in 2011 were discovered by internal log review). So, they began scrutinizing daily VPN connections into their environment. What they found startled and surprised them: an open and active VPN connection from Shenyang, China! As in, this connection was LIVE when they discovered it.
As just a very basic investigative measure, once investigators acquired a forensic image of Bob’s desktop workstation, we worked to carve as many recoverable files out of unallocated disk space as possible. This would help to identify whether there had been malicious software on the system that may have been deleted. It would also serve to illustrate Bob’s work habits and potentially reveal anything he inadvertently downloaded onto his system. What we found surprised us – hundreds of .pdf invoices from a third party contractor/developer in (you guessed it) Shenyang, China.
As it turns out, Bob had simply outsourced his own job to a Chinese consulting firm. Bob spent less that one fifth of his six-figure salary for a Chinese firm to do his job for him. Authentication was no problem, he physically FedExed his RSA token to China so that the third-party contractor could log-in under his credentials during the workday. It would appear that he was working an average 9 to 5 work day. Investigators checked his web browsing history, and that told the whole story.
Follow-up post: http://securityblog.verizonbusiness.com/2013/01/18/clarification-on-recent-blog-post-case-study-pro-active-log-review-might-be-a-good-idea
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Employee outsources his work to China for 1/5th of his salary. Eventually gets caught. (Original post)
|Renew Deal||Jan 2013||OP|