BoxSentry Fights False Positives

Singapore-based BoxSentry has been busy. While beefing up its technology base -- in part to compensate for the loss of the challenge/response layer -- the company has developed new techniques to better identify false positives.

BoxSentry has wrapped the new techniques in a product it's calling LogiQ. The idea is that it can run alongside a traditional spam filter and automatically retrieve any false positives it finds.

As an illustration, BoxSentry offered a "typical" example: Over the test period, a deployed spam filter from one of the well-known vendors delivered 11,500 legitimate messages, but LogiQ found an additional 680 false positives in the filter's quarantine. That's a roughly average false positive rate, in our experience. Not exactly state-of-the-art, but pretty representative of deployed spam filters. It might equate to one false positive every week per user.

BoxSentry says that 100% of the false positives identified with these new techniques really are false positives -- although they may not catch all of them.

A bold claim; we look forward to digging into the details of the techniques under NDA ...

... Richi Jennings

One Comment

  1. Posted May 27, 2009 at 1:03 PM | Permalink

    “That’s a roughly average false positive rate,… one false positive every week per user. ”

    I’m not sure why you think this is an average I’d say this is high.


  2. Posted May 27, 2009 at 1:30 PM | Permalink

    David, if you mean “too high,” then I agree with you. However, I’m talking about the actual FP rate with today’s deployed filters.

    Lest we forget, there are still some shockingly bad filters running out there. Many of them with awful FP rates. These do tend to push up the average!

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