Worms and viruses, Oh my
WinInfo | at | by Mike
Two new computer attacks are wreacking havoc with PC users this week, clogging email systems and overwhelming corporate networks. The first, which oddly enough seeks to undo the damage from the infamous MSBlaster worm, is a worm called W32.Welchia or W32/Nachi; it aggressively looks for new hosts that MSBlaster has infected, then downloads and installs the Microsoft patch that fixes the vulnerability. The second, SoBig.F and its variants, is a virus and is more malicious. This virus infects users through email, searches for email addresses on the users' systems, then sends itself through email messages to each of those email addresses.