=== Heartbleed ===OpenSSL versions 1.0.1 through 1.0.1f had a severe memory handling bug in their implementation of the TLS Heartbeat Extension that could be used to reveal up to 64 kilobytes of the application's memory with every heartbeat.
=== Heartbleed bug ===7 апреля 2014 года было объявлено о критической уязвимости OpenSSL 1.0.2-beta и всех версий OpenSSL 1.0.1, кроме 1.0.1g.