Ensure that none of the server certificates managed by AWS IAM were compromised by the Heartbleed bug, meaning that none of the SSL/TLS certificates were uploaded before April 1st 2014, when the security bug was publicly disclosed. Heartbleed is a critical bug in the OpenSSL library that allows attackers to eavesdrop on SSL/TLS encrypted communications, steal sensitive or confidential data from services and users and be able to impersonate services and users