Whenever you share data with another computer or computer user, you risk exposing your computer to potential viruses. There are many ways you can share data and many ways a virus can be transmitted:

• Opening an infected file attached to an email message or instant message
• Launching an infected program file downloaded from the Internet
• Sharing a data CD, USB memory drive, or floppy disk that contains an infected file
• Sharing over a network a computer file that contains an infected file