The Five Coolest Hacks of 2007

Hackers are creative folk, for sure. But some researchers are more imaginative and crafty than others. We're talking the kind of guys who aren't content with finding the next bug in Windows or a Cisco router. Instead, they go after the everyday things we take for granted even more than our PCs -- our cars, our wireless connections, and (gulp) the electronic financial trading systems that record our stock purchases and other online transactions.