A new pest makes Mozilla's Firefox browser uncertain. Malicious software passwords from spying by manipulating a configuration file of Firefox. The infected browser stores without asking all log-ins that the user enters various applications on the web. As the Webroot Threat blog reported, the Trojans called "Trojan-PWS-NSLog, current versions of Firefox also attack.

Normally, Firefox will ask for a password by default on a Web site that the user wants to save it. Although the saving of passwords are completely turned off to save a password option without question, is there in Firefox does not. The Trojan copies itself under the file name in the directory Kernel.exe Windows/system32 and fetches from the registry by the Internet Explorer saved passwords. He also creates a new user called Maestro.

The site, contact the Trojan connection will, however, is already taken offline. The programmer could already be identified. On Facebook, he says he from Iran and program malware was the only way for fun. It provides the source code of his key-logger for free download. Infected computers can be loud Threat Blog "clean" light again: Just install a current version of Firefox over the existing