Adversarial examples: attack can imperceptibly alter any sound (or silence), embedding speech that only voice-assistants will hear Cory Doctorow
Mafia used the text-message ticker at the bottom of a sports broadcast to get messages to mob bosses Cory Doctorow
adware For two years, criminals stole sensitive information using malware hidden in individual pixels of ad banners Cory Doctorow
steganography North Korean defectors undermine totalitarianism with smuggled pirate sitcoms Cory Doctorow
steganography SkypeHide promises to hide secret messages in silent Skype packets, even when authorities are listening Xeni Jardin