Requirements : 1. Firefox Browser 2. Firesheep Firefox Extension Go on reading to know the hacking trick!! 1.Download firesheep Firefox extension.This is a freeware extension for Firefox browser. ( You can download it from Firefox Plugin store, otherwise Google it to download) 2. Once installed it will open a sidebar window into your Firefox browser. 3.Now it will show all the people who are connected to unsecured wi-fi network.Once they login into your Facebook or twitter account you will get a notification and with a single click you can login into their account. This whole thing work on the technique of cookie hijacking.Once your session cookie is hacked then anybody can login into your account.These cookies can be easily captured on unsecured wi-fi network. How to protect yourself from this: The best way to protect yourself from such a hacking trick is to avoid using your Facebook or twitter accounts on unsecured wi-fi networks as it is a s...