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Spam and Viruses: Unholy Matrimony, Part 1
While the vast majority of viruses, Trojans, worms, and other malware are aimed at Windows, users of Linux, Unix, BSD, and MacOS should not be complacent. You never know where the next exploit will be aimed. We'll look at server-level defenses in part 1 of combating the two-headed monster, while part 2 will cover the client side, including how to decode mail headers and recognize malicious code.
No matter how much we cajole, nag, pester, plead, implore, educate, and even threaten, it's inevitable that our users will continue to open malicious attachments. Why bother with a firewall at all when email rolls out the red carpet to viruses, worms, and Trojan horses? Anti-virus software and gateway software that scan message content and mime types are important and essential, but they simply can't catch everything. And even when users are well-behaved, certain email clients will happily execute malicious code without any user intervention. All the spam has to do is land in the user's inbox.
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