Hypertouch, Inc. v. Kennedy-Western Univ., 2006 U.S. Dist. LEXIS 14673, 2006 WL 648688 (N.D. Cal. Mar. 8, 2006)

You can protect your computer from viruses without expensive software. Instead, follow these simple tips:

Stay up-to-date on all system updates.

Don't download any email attachments you weren't expecting.

Avoid freeware and peer-to-peer sharing sites.

Use alternative web browsers and email software.