Imagine the internet and all your favorite apps as a giant house. Most of us only see the fancy furniture and painted walls. But underneath it all, there's a foundation made of countless tiny, invisible pieces of code. When one of those pieces has a secret flaw, it can be a problem nobody sees coming.

This is the strange story of a bug called "Stranger Strings." It was a hidden issue in a piece of software called SQLite, a database engine that powers more of our digital world than most people realize. For a while, this quiet bug was a tiny crack in the foundation, waiting to be found.