So what is heartbleed? It is actually not unlike the security flaw that was found by Apple in Safari. It is another SSL/TLS encryption flaw. As I wrote in my last article, SSL/TLS is the "digital handshake" that allows your computer to talk to a server. It basically encrypts your data while it travels to the destination so no one can see things like your bank accounts, passwords, and tweets. Unfortunately, Heartbleed found a vulnerablility and exploited it.