Tech heads say the new Firefox basically will protect Firefox users against passive (dragnet) surveillance.Firefox 37 has a number of improvements headed by the addition of "opportunistic encryption" to any sites supporting the HTTP/2 AltSvc standard.
A representative of the browser maker says: “The new version also supports encrypted Bing search, includes the OneCRL list of revoked certificates to protect users from forged certificates and has updated TLS encryption. The Heartbeat user rating system, which allows users to rate and promote Firefox through other means, will also start to roll out to certain users.”
Analysts say Firefox responded well to certain security concerns about encryption, by improving how encryption is handled inside the Firefox browser to make browsing safer.