bayesian spam filter
bayesian spam filter thoughts for 12.31.1969
Bayesian filtering. Bayesian filtering is one of the techniques used by sophos puremessage to determine if an email is spam or not. Many of the filters now found on popular mail clients (such as Apple Mail) are based on Bayesian principles. While it is arithmetical in nature, spamassassin is not itself a bayesian filter, although bayesian filters can be included as spamassassin tests. A Bayesian filter looks at individual words (or "tokens") in a message and "weighs" them for their frequency of appearance in spam versus their frequency of appearance in general, non-spam e-mail; when the weights of all these words are combined using the Bayes equation, the result is an estimate of the probability that a message is spam. The spambayes outlook add-on makes use of bayesian statistics to wipe out the junk in your inbox. One distinctive feature of the Bayesian approach is that it relies on objective analysis of actual data rather than on some filter-writer's guestimate of what is in spam and what isn't, and proponents of Bayesian filters claim very effective filtering with low false positives and negatives. One distinctive feature of the bayesian approach is that it relies on objective analysis of actual data rather than on some filter-writer's guess of what is in spam and what isn't, and proponents of bayesian filters claim very effective filtering with low false positives and negatives.
bayesian spam filter
| Barracuda Networks Inc., the worldwide leader in email and Web security appliances, announced that Barracuda Central, its 24x7 security operations center, began immediately blocking a malicious "backdoor" virus distributed via a socially engineered email purportedly from Microsoft earlier today. Barracuda Networks was one of the first vendors to profile the malware and quickly categorized it in ... |
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