OpenSSL is an open-source code library that encrypts communications between a computer and a server using SSL/TLS (Secure Sockets Layer/Transport Layer Security) It is a fundamental defense for keeping e-commerce transactions, email and other data unreadable if the traffic is intercepted. Confidence in OpenSSL was shaken in April after a two-year-old software vulnerability called “Heartbleed” was discovered that could allow an attacker to decrypt intercepted traffic or obtain data such as logins and passwords from servers.”]