# Heartbleed

> English word · Proper noun

## Definitions
1. A security bug in OpenSSL, where more data can be read than should be allowed, which was disclosed and fixed in April 2014.

## Etymology
Blend of heartbeat (“periodic signal generated to indicate normal operation of hardware or software”) + bleed.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/heartbleed