More About Decreasing Spam TCO

Last week, we wrote that it is a good idea for spam control products to allow users to understand why a particular message found its way into the quarantine. We got feedback to the effect that spam filtering should remain a black box to avoid giving feedback to spammers on how to get around anti-spam techniques, and that better end-user tools and whitelists were the answer.

We disagree. As a general rule, "security by obscurity" is a losing proposition. Lest we forget, a key goal should be to avoid needing quarantines at all, as they destroy cost savings from productivity. Whitelists are also a blunt instrument and should be avoided unless strictly necessary. 

... Richi Jennings, with thanks to Paul Maddox of SurfControl

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