Security researcher finds 318,239 systems are still vulnerable to the critical OpenSSL Heartbleed bug. Over 1.5 million servers still support the vulnerable “heartbeat” feature of OpenSSL that allowed the critical bug. The bug is the encryption flaw that left large number of cryptographic keys and private data such as usernames, passwords, and credit card numbers, from the most important sites and services on the Internet open for hackers. Security researcher Robert David Graham may have escaped other systems either because of spam blocking or unorthodox OpenSSL setups.
Source: https://thehackernews.com/2014/05/300000-servers-still-vulnerable-to_9.html