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February 27, 2008 6:41 AM PST

Data-mining detects the disaffected

by Mark Rutherford
(Credit: AFIT)

Here's another reason to get off that antisocial kick and get with the networking.

The Air Force is developing a data-mining technology meant to root out disaffected insiders based on their e-mail activity--or lack thereof, according to an article in this month's International Journal of Security and Networks.

The technology, based on something called Probabilistic Latent Semantic Indexing (PDF), scours an organization's e-mail traffic and constructs a graph of social network interactions illustrating employee activity. If a worker suddenly stops socializing online, abruptly shifts alliances within the organization, or starts developing an unhealthy interest in "sensitive topics," the system detects it and alerts investigators.

Most corporate security efforts focus on electronic threats from the outside, even through insiders with access to sensitive information can pose a greater threat to an organization, according to researchers at the Air Force Institute of Technology at Wright Patterson Air Force Base in Ohio. Alienated individuals who display a secret interest in suspicious topics but never let on by communicating with others are the most likely to be an insider threat, the researchers say. The program could prevent security breaches, sabotage, and even terrorist activity at multinational corporations and military organizations alike, according to the article.

And don't think that just because you're the boss you're off the hook. The team tested Enron's e-mail archive and uncovered several individuals who represented potential insider threats. Granted, none of them were the bosses who had done all the damage, but the researchers were confident that with full access and by turning a "domain on its ear" the software would ferret out potential malefactors and whistleblowers alike.

Mark Rutherford is a West Coast-based freelance writer. He is a member of the CNET Blog Network, and is not an employee of CNET. Email him at markr@milapp.com. Disclosure.
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by allstar919 February 27, 2008 7:52 AM PST
That's fascinating. Obviously some will cry "big brother", but I really do think this could be used in a very beneficial way. Being "disaffected" is obviously not a crime, so it should not be treated that way, but I would hope it prompts some response.
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by ecotopian--2008 February 27, 2008 9:24 AM PST
This is going to be great! Now, when you return from vacation or illness, you will get waterboarded to find out why you stopped emailing everyone. I'd like to see who the guys are who are defining "normal" behavior. I'll bet they are some pretty odd ducks.
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by Tergon February 27, 2008 10:31 AM PST
All Star writes: "Obviously some will cry "big brother", but I really do think this could be used in a very beneficial way"
The Problem with B.B. technology is that it can all be used in a "beneficial way."
Example: RFID implants for carrying ones medical records. Good thing ultimate portable MR, good thing your body can be easily identified if (*** forbid) you a a John/Jane doe. However the same chip can be used by a malicious "big brother" government to track certain people/races/religions/etc.
These are the problems people have with B.B. technology and things like "enhanced interrogation" because even if they are not currently used for "evil" in the wrong hands you have a government which controls it's citizens through fear.
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The military establishment's ever increasing reliance on technology and whiz-bang gadgetry impacts us as consumers, investors, taxpayers and ultimately as the "defended." Our mission here is to bring some of these products and concepts to your attention based on carefully selected criteria such as importance to national security, originality, collateral damage to the treasury and adaptability to yard maintenance-but not necessarily in that order.

Mark Rutherford is a member of the CNET Blog Network and is not an employee of CNET.

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