Tech expert Sean Gallagher says what's happening in cyberspace is a battle royal, with multiple, mysterious combatants hacking away at each other, disrupting commerce and public life. Cyber attacks have occurred around the world, with actors holding computer systems hostage for ransom, and some just destroying data. Some cyberweapons develeoped by the National Security Agency in Maryland have been used in recent attacks. If all this seems over our heads, Gallagher brings it down to Earth with 20 minutes of tech'splaining. Sean is the Baltimore-based IT and national security editor of Ars Technica and joins us on the podcast every few weeks to talk about the latest in tech news.Links:https://arstechnica.com/author/sean-gallagher/https://arstechnica.com/security/2017/06/petya-outbreak-was-a-chaos-sowing-wiper-not-profit-seeking-ransomware/https://www.nytimes.com/2017/06/28/technology/ransomware-nsa-hacking-tools.html