Researcher messes up WiFi with an rPi and bargain buy radio stick

Putrid Piper picked apart a packet for just $15

KU Leuven Phd student Mathy Vanhoef has smashed conventional wireless security thought by creating continual, targeted and virtually indefensible stealth jamming of WiFi, Bluetooth, and Zigbee networks, and tampering with encrypted traffic, with little more than a $15 dongle."