Forensic Analysis Isn’t Just on TV
Posted in Other, Security on March 23rd, 2011 by Robin – Be the first to comment
A couple of weeks ago, I attended a fascinating presentation by a local Minneapolis firm that specializes in forensic audits. These are the guys hired by companies that suspect criminal behavior within their ranks. While not technically a law enforcement entity, their expertise centers on finding hidden evidence. The presenting experts were an ex-law enforcement officer who worked on St. Paul’s “Crimes Against Children” task force, and a trained interrogator who painted a picture of how it’s possible to dissect a computer to find evidence of wrongdoing.
We heard the tale of a hospital manager that was ordering expensive supplies on behalf of his employer, and then turning around and supplementing his disposable income by selling them on Craigslist. He even got confident enough in his fraudulent scheme to start drop-shipping some of the orders directly to his “customers.” He was finally caught after his computer showed evidence of ghost orders totaling approximately $250,000, and incriminating e-mails from one of his various online buyers. Then, there was the female employee who claimed sexual harassment from her supervisor, but was subsequently found out in an e-mail message to be buying cocaine from that same supervisor! These examples were quite staggering cases that took some time to solve, but both were carried to prosecution on the weight of the computer forensics.
I was particularly fascinated by the topic as I love true-crime shows on television. I love to hear how people think they’ve committed the elusive “perfect crime.” Unfortunately (usually for the perpetrator), it’s often the littlest details that get them caught. For example, the case of a woman’s Internet search on “how to kill someone without getting caught,” which became evidence after her husband mysteriously turned up dead.
Fortunately, PowerTech has never had to consult in a murder case. However, our software does enable security teams to perform detailed forensic analysis of events that take place on an IBM Power Systems server. IBM i has an extensive (and often under-utilized) facility to log activities performed by system and application users. If logging events for all users garners too much log data, you can narrow it down to specific users, or even specific objects accessed by those specific users.
As I mentioned, many customers still don’t make use of this capability, but the biggest challenge for those that do is usually analyzing and interpreting the data. No one in their right mind wants to manually pour over log entries that can number in the millions per day. Even if a person wanted to, realistically it wouldn’t be humanly possible. PowerTech is well-versed in this dilemma and has several powerful solutions to help with the burdensome aspect of the task, including escalating the log entries to an enterprise monitoring tool in syslog format. We also help many customers via the advanced analysis capabilities of Compliance Monitor. And if you want to get down to the database record and field level, we have DataThread. These solutions ensure that your security staff is equipped to react to issues in a timely manner and, by doing so, reduce risk. Who wouldn’t want their security team to have the proper equipment necessary to enforce and react to questionable activities?
I often have to meet with executives to explain how spending money on security adds value to an organization. While it might not be as immediately quantifiable as a new machine in the factory, there are plenty of ways to demonstrate a return on security investment (ROSI). In fact, if some of the companies in my earlier examples had had better controls and tools in place, these unfortunate, embarrassing, and definitely costly situations might have been averted.
If you would like to learn more about how to analyze your IBM i event log, give the experts at PowerTech a call.
Cheers,
- rt


Robin Tatam is the Director of Security Technologies for
Jill Martin