Heartbleed is a serious vulnerability in OpenSSL, an open-source implementation of the SSL/TLS encryption used to secure the Internet. This vulnerability allows hackers to access sensitive data, eavesdrop on communications, and possibly impersonate services and users on web servers that use OpenSSL.

Heartbleed Bug - DigiCert.com Detect if you are vulnerable to the Heartbleed Bug attack. For fast checking. If you only have a few public facing servers to check, use our SSL Server Checker. For thorough checking. Use DigiCert Discovery to detect if you are vulnerable to the Heartbleed Bug attack. The Normal Person’s Guide to the Heartbleed Vulnerability Apr 09, 2014 check_heartbleed - Nagios Exchange Apr 18, 2014

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Apr 17, 2014 Detecting and Exploiting the OpenSSL-Heartbleed Sep 02, 2014

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The Heartbleed bug, as its now known, affects any sites and services running specific versions of OpenSSL (1.0.1 through 1.0.1f). Many sites may run older versions of OpenSSL that are not This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. This means you're free to copy and share these comics (but not to sell them). More details.