Web site developers can use this technology to block browsers from showing their Web sites inside a frame-essentially a smaller window within the browser window. With Web browsers becoming both more important and more powerful, browser makers must constantly watch for new attack possibilities.įirefox 3.6 also gets a new general approach to cut down browsing risks: support for what's called the X-Frame-Options HTTP response header. ![]() Firefox 3.6.9 is also available from CNET for Windows, Mac, and Linux.Ĭritical vulnerabilities can let a remote attacker run arbitrary code on a computer. Mozilla released two new versions of its browser on Tuesday, Firefox 3.6.9 and Firefox 3.5.12, to close 10 critical security vulnerabilities in each and to help Web site operators block a risk called clickjacking.
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