HTML5 browser bug could let pranksters fill up your hard drive

Did you know a webpage could fill your hard drive with junk data, unbeknownst to you? It's true: FillDisk.com can do just that, and until web browsers fix the problem, more malicious websites might be able to do it too.

Web developer Feross Aboukhadijeh set up FillDisk as a proof of concept to demonstrate a nasty exploit in HTML5: with a simple trick, the Web Storage standard allows any website to place large amounts of data on your drive. It's not technically a hack and won't allow attackers to access your computer, but running out of space still has the potential to be annoying.