Known by the dramatic name Heartbleed, the bug left the widely-used, open source OpenSSL protocol vulnerable to attacks that could put servers private encryption keys into the hands of hackers. Major sites like Yahoo, Imgur, Flickr, LastPass, and countless others were left vulnerable, and, worst of all, the bugs been in the code for years. There was an emergency patch, but until it was installed, tens of millions of servers were exposed. Letting attackers listen in on data traffic