Security experts are warning all internet users to change all of their passwords because of a threat called Heartbleed that breached encryption technology used to securely transmit email, e-commerce transactions, social networking posts and other Web traffic.The serious threat is has remained undiscovered for more than two years.  Yahoo, Google and Tumblr have installed security patches and others are scrambling to do the same.  The breach involves SSL/TLS, an encryption technology marked by the small, closed padlock and "https:" on Web browsers to sig

nify that traffic is secure.