Earlier this week we released version 2.0.1 of HTTPS Everywhere for Firefox, and also, a new beta version for Chrome! You can install HTTPS Everywhere here:

Firefox users will find a number of improvements in version 2.0. In addition to support for four hundred more sites, a crisper user interface, and translation into a dozen languages, there is a new optional feature called the Decentralized SSL Observatory. It detects and warns about security vulnerabilities as you browse the Web. Firefox users can turn on this setting from the Tools->HTTPS Everywhere->SSL Observatory Preferences menu, or from the HTTPS Everywhere toolbar button, which looks like this:

In that Preferences page, check the box marked "Use the Observatory":

If you turn on this feature, it will send anonymous copies of certificates for HTTPS websites to EFF's SSL Observatory database, which will allow us to study them and detect problems with the web's cryptographic and security infrastructure. The Decentralized SSL Observatory is also capable of giving real-time warnings about these problems.

At the moment, the Observatory will give warnings if you connect to a router, VPN, firewall or similar device that has an insecure private key due to the random number generator vulnerabilities that were recently discovered by two teams of researchers, using data from the SSL Observatory and other sources. We will be adding more kinds of certificate and key auditing to the Decentralized Observatory in the future.