Term of the Moment

Chrome browser


Look Up Another Term


Definition: Heartbleed


A bug in the widely used OpenSSL Internet security protocol that was discovered on April 1, 2014. Heartbleed enabled a large amount of memory (RAM) to be accessed, which could disclose passwords and private keys. Although a patch was forthcoming in a matter of days, more than a half million Web servers were vulnerable until the patch was applied. See OpenSSL, SSL and TLS.