What should you know about Heartbleed, a recently uncovered security bug? That sounds a bit alarmist, we know, but now that internet and security experts know a little more about the security vulnerability, its becoming more and more clear that Heartbleed is nothing to mess with. Heartbleed is a security vulnerability in OpenSSL, a popular, open-source protocol used to encrypt vast portions of the web. Security company Codenomicon set up an entire website to handle questions about the vulnerability, although their explanation might be too in the weeds for some readers.