Leo and I discuss the continuing woes of WoSign. Autonomous micro-recon drones turn out to be real. A new crypto attack on short block ciphers prompts immediate changes in OpenVPN and OpenSSL. We introduce a new Security Now! Abbreviation, "YAWTTY," Yet Another Way To Track You. We continue with discouraging social engineering experiment, another clever USB attack, a bunch of fun miscellany, and a look at the weaponizing of Rowhammer with "Flip Feng Shui," the most incredibly righteous and sublime hack ever, ending with our follow-up to last week's Security Now! Puzzler.