Mozilla firefox turned 8 yesterday.

Read about  HSTS (HTTP Strict Transport Security, the mechanism by which

a server can indicate that the browser must use a secure connection

when communicating with it

in the Mozilla Security blog.

Now in Firefox 17

The ?preload list? used for this feature has been seeded with entries from

a corresponding list for Google's Chrome browser, Keeler noted.

The new feature is now available in the current beta version of Firefox 17,

so it's available for anyone to check out.

Source Katherine Noyce