Which of these was the name of a bug found in April 2014 in the publicly available OpenSSL cryptography library?

The correct answer is Heartbleed. Heartbleed was a significant security vulnerability discovered in April 2014 in the widely used OpenSSL cryptographic software library. It allowed attackers to exploit a flaw in the OpenSSL's implementation of the Transport Layer Security (TLS) heartbeat extension, enabling them to steal sensitive information like passwords, encryption keys, and other data from servers and clients without leaving any trace. It was considered one of the most critical cybersecurity vulnerabilities due to its widespread impact and potential to compromise the privacy and security of internet users globally.