spies

Twitterati and other netizens should already know that their Internet musings are public and could potentially become fodder for intelligence analysts. But now U.S. spy agencies have officially invested in a software firm that monitors social media and half a million web 2.0 sites daily.

Using Google Earth, his own legwork, and a slew of amateur spies, Curtis Melvin has mapped out all of North Korea's secrets. Called "North Korea Uncovered", the project has pinpointed everything from nuclear facilities to restaurants, from anti-aircraft arsenals to a waterslide.

Hackers may be one step ahead of you once again. Sure, you can follow all the steps to protect your private data, like creating a password that's hard to guess or clearing your memory cache after browsing, but that may not be enough. It's very possible that hackers can sniff out your data with every keystroke—at least that's what Swiss researchers proved in a video demonstration, which showed four different ways to pick up sensitive information from people's keyboards as they typed.