Firefox {for not fx34}version 34{/for} now blocks SSLv3 certificates to protect your information from attacks. SSLv3 (Security Sockets Layer version 3.0) is a type of technology that some websites use to connect to a server. It is no longer secure, which makes it easy for hackers to extract your personal information during a connection. {for fx34} When you access a site that supports SSLv3, Firefox will block it and display this message: "Unable to connect securely". In these cases, please contact the website owner to let them know about the problem. {/for} =Additional precautions= {for not fx34} Firefox version 34 (currently on Beta) will disable SSLv3 by default. If you are unable to use the latest version, install this [https://addons.mozilla.org/firefox/addon/ssl-version-control/ Mozilla add-on] to disable SSLv3 immediately. {/for} To further protect yourself from attacks, keep Firefox [[Update Firefox to the latest version | up to date]]. The simplest way to do this is to set up automatic updates: # Click on the menu button [[Image:new fx menu]], then click {for win}{menu Options}{/for}{for mac}{menu Preferences}{/for}. # Click the ''Advanced'' panel in the ''Update'' tab, and make sure that “Automatically install updates” is checked. <!--I can't find this on Ubuntu. Can anyone help?-->

Firefox version 34 now blocks SSLv3 certificates to protect your information from attacks. SSLv3 (Security Sockets Layer version 3.0) is a type of technology that some websites use to connect to a server. It is no longer secure, which makes it easy for hackers to extract your personal information during a connection.

Additional precautions

To further protect yourself from attacks, keep Firefox up to date. The simplest way to do this is to set up automatic updates:

1. Click on the menu button The image "new fx menu" does not exist., then click OptionsPreferences.
2. Click the Advanced panel in the Update tab, and make sure that “Automatically install updates” is checked.