
A worm that first disguised itself as an email from computer vendors <A HREF="http://news.zdnet.com/2100-1009_22-5653697.html?tag=nl.e589">is now attempting to trick MSN Messenger users</A> into executing malicious files. The Chod.B worm, which was first discovered on April Fools' Day, spreads via email purportedly from Microsoft and security companies Symantec and Trend Micro. When using the MSN Messenger instant-messaging client as its propagation tool, the virus sends out messages to contacts from the infected user's address book, warning them that they are about to receive a file. The virus then sends a file designed to infect the recipient's system.