Caleb Madrigal is a programmer who enjoys hacking and mathing. He is currently working as an applied security researcher/senior software engineer at Mandiant/FireEye. Most of his recent work has been in Python, Jupyter, Javascript, and C. Caleb has been into security for a while... in high school, he wrote his own (bad) cryptography and steganography software. In college, he did a good bit of "informal pen testing". Recently, Caleb has been finding "evil" on the endpoint with Machine Learning (and other things) and hacking various wireless devices (including many IoT devices) with SDR, WiFi, packet crafting, etc.