This slashdot article, based on a forum post in the skype forums reveals, that Skype obviously reads the “/etc/passwd” file and Firefox’ profiles and Addons. The “/etc/passwd” file saves usernames and passwords in Linux. Firefox profiles contain saved passwords, bookmarks and cookies. The Skype team has not yet commented this behaviour. Once again we see that closed source software is not the most relieable.
Give me the first comment