Ransomware attacks in Mexico and Germany. Wipers in criminal service. Supervising Siri and Alexa. Mass shooters find inspiration and online expression.

A Mexican publisher is hit with an extortion demand. Ransomware increasingly carries a destructive, wiper component: Germany is dealing with a virulent strain right now. Apple and Amazon, after the bad optics of reports that they’re farming out Siri and Alexa recordings to human contractors for quality control, are both modifying their approaches to training the assistants. And investigators sort through mass shooters’ digital trails. Joe Carrigan from JHU ISI on the VXWorks operating system vulnerabilities. Guest is Eli Sugarman from the Hewlett Foundation on their efforts to reimagine cybersecurity visuals. Learn more about your ad choices. Visit megaphone.fm/adchoices