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Par Laurent HESLAULT, Directeur des technologies de scurit, Symantec, Europe de lOuest
Malicious code is in a constant state of malignant evolution, finding new forms, disguises, and vectors to reach, penetrate, and compromise its targets. Signature-based antivirus software is effective against viruses, Trojans, and worms for which signatures have been catalogued. It is also relatively efficient, although the performance impacts of scanning for signatures grow with file size, compression, complexity, and number of signatures that must be scanned. But signature based defenses are useless in encounters with new malware.
Because of this vulnerability, signature-based defenses are typically backed by additional lines of...
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