from ibnlive.in.com: Passwords, credit cards and other sensitive data are at risk after security researchers discovered a problem with an encryption technology used to securely transmit email, e-commerce transactions, social networking posts and other Web traffic. Security researchers say the threat, known as Heartbleed, is serious, partly because it remained undiscovered for more two years. Attackers can exploit the vulnerability without leaving any trace, so anything sent during that time has potentially been compromised. It's not known, though, whether anyone has actually used it to conduct an attack. Researchers are advising people to change all of their passwords.