Just a brief background on Heartbleed Bug . Remember that "lock" symbol at you're browser's address bar? That tells you that your connection is encrypted. It means that when someone tries to eavesdrop on your connection, they cannot read your information because it was jumbled. Early this week though, researchers discovered a bug or an error in the technology behind that lock, OpenSSL. Meaning to say, sometimes, it wont work. The worst thing though is that about 70% of the internet uses that technology. It means that some websites, including the ones where you use your credit card number and PIN can expose you to hackers.