Bug in Mozilla and Netscape

Posted on Monday, September 16 2002 @ 9:58 CEST by Thomas De Maesschalck
Zdnet reports that there's a new flaw discovere d in both Mozilla and Netscape :
Netscape and other Web browsers based on the Mozilla development project contain a bug that leaks users' Web surfing data, according to a new report.

The bug reveals the URL of the page a user is viewing to the Web server of the site visited last. This allows a Web server to track where users go after they leave the site, even if the next Web address comes from a bookmark or is manually typed into the browser.
Hit "Read More" to view a few solutions for the problem...

  • Create a file user.js in your profile folder (the one with the pref.js file). For Windows users, the path is probably something like C:WINDOWSApplication DataMozillaProfilesDefault Userf9a1239a.slt. Put the following line in the file:
    user_pref("capability.policy.default.Window.onunload", "noAccess");
    This will stop the onunload handler from being activated.
  • Use a proxy that removes the HTTP referer header, such as Privoxy or The Proxomitron (Win32 only) or
  • Disable JavaScript

About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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