When you hear about major web hacks, you'll often hear the term "SQL injection" used like everyone in the world knows what it means. They don't. But this video will help explain so you're not confused in the future.
It's essentially a way of injecting some code into a data-driven web server that allows the attacker to gain access to the entire contents of a database. But there's a little more to it than that -- and it's also more common than you might think. Or, for that matter, like. [YouTube]