There is a recent news from Twitter that it recently enabled a technology "forward secrecy" for traffic going through its websites that makes it more difficult to decrypt information specially for crackers.
The company said in the post that "Forward secrecy" is just the latest way which Twitter is trying to protect and secure the voice of the users.
Among the fallout over NSA's intelligence work on digital information, technology companies including Google Incorporation and Yahoo! Incorporation have taken certain actions to strengthen security of their information.
Many are using harder-to-crack code to shield their networks and online customer data from unauthorised US spying. The companies, trying to distance themselves from concerns about user data, have said they do not provide NSA direct access to their servers.