Viruses cannot be transferred through an instant message (IM), but it is possible that files attached to an IM may contain viruses or trojans. Also, links sent in an IM may point to web pages that contain viruses and trojans.

You should use caution in opening any file or link sent through IM, even if it is from a known person. Some viruses and trojans can send harmful links that appear to be from a buddy you know. You should always use good virus protection software, such as McAfee VirusScan, for automatic scanning of all attachments.

Phishing is a form of internet-based identity theft. Phishers typically use upsetting or exciting (but false) statements asking for information, such as user names, passwords, credit card or social security numbers, in order to gain access to the victim's financial (and other) accounts.

Phishing scams may take many forms, but they typically start with an email or IM asking you to visit a website to update your personal information.