Firefox Trojan Forces Browser To Save Passwords

A Firefox Trojan has been found to force the Internet browser to save user passwords and then use those
passwords to create a new user account on the infected computer. Most security researchers recommend
that users tell Firefox not to remember their passwords, since saved ones are so easily extracted by malware.

The Trojan-PWS-Nslog malware discovered by security company Webroot , however, gets around user
preferences altogether by actually deactivating the Firefox code that asks if it should save those
passwords when the user logs into a secure site.
Before the infection, a default installation of Firefox 3.6.10 would prompt the user after the user clicks
the Log In button on a Web page, asking whether he or she wants to save the password, Webroot researcher
Andrew Brandt explained in a blog post on Wednesday. After the infection, the browser simply saves all login
credentials locally, and doesn't prompt the user.

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