Never accept a file or run a program whose origin you do not trust .
Always use an anti-virus scanner.
Keep your system protected with regular anti-virus updates.
Latest MSN Messenger News The latest version of MSN Messenger (6.2) allows users to automatically scan all file transfers with an anti-virus program of their choice. Furthermore, users transferring a file through messenger is safer because we've added an extra step before that file can be opened.