Not just 401Ks, but pretty much anything you access online. The advice given in the article about security is good. It should definitely be followed.
QUOTE
So avoid using computers in public areas like libraries or hotel business centers. Thieves using keystroke-monitoring software can easily steal your passwords and user names.
In addition, use firewalls and security software with-anti virus and spyware detection features. Also, use complicated passwords and completely log out when finished.