Iran vows retribution for the US drone strike that killed the commander of the Quds Force. The US prepares for Iranian action, and the Department of Homeland Security warns that cyberattacks are particularly likely. Some low-grade Iranian cyber operations may have already taken place. Austria’s Foreign Ministry sustains an apparent state-directed cyber espionage attack, and in the UK authorities are taking a second look at the August outages at the London Stock Exchange. Joe Carrigan from JHU ISI, describing a clever defense against laptop theft.