Technology Overview   StarEngine   Bullet Signature Database   Technology FAQ   Technology Whitepaper (.pdf)   The Human-Touch Whitepaper (.pdf)   Products Brochure (.pdf)   StarEngine The Mail-Filters StarEngine (Spammer Tricks Analysis and Response Engine) is next-generation Spam filtering technology that looks for spammer tricks, such as falsified information in the headers, and successfully identifies the message as Spam. Neutralizing Spammer Tricks Spammers now know that they have to do specific things to get around certain filters. In fact, they have quite an arsenal of tricks to try to get their messages read. For example, if SpamAssassin (the technology used by most Spam filtering solutions) has a rule that looks for the word SEX in the subject line, a spammer might spell it $EX or $$EX or S_E_ X or $ E X – you get the idea. An administrator using a product built on the SpamAssassin technology would have to be very dedicated to find and create rules for all the variations of words spammers use today. This is just one example of one trick that Spammers commonly use to beat anti-spam solutions. The Mail-Filters StarEngine is designed to beat spammer tricks, even as new tricks are designed by spammers. The following chart illustrates what some of the most popular spammer tricks and the types of filters that are vulnerable: Spammer Tricks Mail-Filters StarEngine + Bullet Signatures Ordinary Signatures (Checksums or Hash Values) Linguistic Formulas (SpamAssassin, etc.) Bayesian RBLs  Hash Busting Not Vulnerable Vulnerable        Snow-Flaking Not Vulnerable Vulnerable        Misspelling Not Vulnerable   Vulnerable Vulnerable    IP Hopping Not Vulnerable   Vulnerable   Vulnerable  Embedded Content Not Vulnerable   Vulnerable Vulnerable    Foreign Lang. Spam Not Vulnerable   Vulnerable Vulnerable    HTML Spam Not Vulnerable Vulnerable Vulnerable Vulnerable   As spammers come up with new tricks the StarEngine is updated to identify and overcome these tricks…automatically. Updates to the StarEngine occur automatically without intervention from an administrator. Foreign Language Spam Spam also comes in a variety of languages, not just English. A complete filtering solution needs multi-language support. The Mail-Filters StarEngine is designed from the ground up to support all languages, including languages with double-byte character sets like Japanese, Korean, Chinese, and Arabic. The Mail-Filters technology is being used successfully in over 100 countries across the globe on 6 continents.

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