This week Mathieu and Joe are joined by Ira Winkler, the acclaimed cyber security expert, world-renowned security researcher, and author of the new book, “You Can Stop Stupid: Stopping Losses from Accidental and Malicious Actions”. In part one, Ira talks about the most common security mistake businesses are making today and what he thinks of Twitter's hire of a famous hacker to be their new head of cybersecurity.