Windows Bug Allows Repeat Invasions
Say you've just recovered from a serious worm attack. You've run your antivirus and adware/malware removal utilities, installed the latest patches, even double-checked to make sure your security and privacy settings are set at high. You're good, right? Maybe not.
Microsoft recently released a Security Advisory (along with an update to Windows XP Service Pack 2 containing the fix) warning about an "unexpected behavior" in Windows Firewall that could let a clever attacker who had broken into your PC leave a back door to the Web unlocked for next time. Only PCs running either XP with SP2 or Windows Server 2003 are susceptible.
Hackers sometimes get into a PC by taking advantage of the ports that Windows uses to talk with the world. Literally thousands of ports are available, but Windows Firewall automatically blocks most of them to protect you. PCWorld.com - Windows Bug Allows Repeat Invasions
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