A Georgia Tech student and two of his roommates have hacked Yo, the mostly pointless app that has the whole tech community freaking out. The app was built in only eight hours, so it isnt shocking it was so easy to hack. We can get any Yo user’s phone number (I actually texted the founder, and he called me back). It certainly isnt ideal that some Georgia Tech kids have your phone number, but really, thats what you get for using this ridiculous app.