Heartbleed vulnerability – a pesky security bug that popped up in 2014. It’s a sneaky little bug that slips through the cracks of the OpenSSL library, exposing a lot of private info. Yikes!

This baddie messed with SSL/TLS encryption, which is like the digital bodyguard of the internet. The result? Roughly 500,000 web servers (that’s a whopping 17% of all servers online!) were left vulnerable to data theft. So remember the tale of Heartbleed as a reminder that even the toughest security can have its weak spots.