German programmer Robin Seggelmann introduced a new feature called “Heartbeat” in the most secured open source encryption protocol, OpenSSL. The bug opened doors for the cyber criminals to extract sensitive data from the server’s memory and almost every major site have been affected by it. The developer is responsible for what may be the biggest Internet vulnerability in recent history, but it was just a single programming error in the new feature as he didn’t notice the missing validation and unfortunately the same skipped by the code reviewer.
Source: https://thehackernews.com/2014/04/german-developer-responsible-for.html