Computers using Microsoft's Windows XP or 2000 operating systems are the target of a new Internet worm that spreads from machine to machine without user intervention. The worm, dubbed Sasser, takes advantage of a flaw in Windows that was patched by a fix issued in mid-April. However, because not all users take advantage of an auto-update feature included in Windows XP and 2000, there are still many systems connected to the Internet that are vulnerable. Sasser attacks a component of Windows called LSASS.EXE, and installs a file called AVSERVE.EXE, which then begins scanning the Internet and local networks for more...