There are reports of a Trojan spreading via MSN Messenger.  The Trojan arrives as a chat message with a link to a web site. This website links to an executable file. These messages may appear to come from a known contact.

US-CERT urges users and administrators to take the following preventative measures to help mitigate the security risks:

• Install anti-virus software, and keep virus signature files up-to-date.
• Refer to the Avoiding Social Engineering and Phishing Attacks document for more information on social engineering attacks.