Sophos Security Chet Chat Episode 253 September 230, 2016. Join security experts Chester Wisniewsi and John Shier for the latest episode of our regular security podcast. Listen to the full transcript of this week’s episode of the weekly security podcast. Use the weekly Newsquiz to test your knowledge of stories you saw on CNN.com security breaches.com and other sites for more information about security and privacy in the U.S. Have a personal essay to share with us on iReport.com.”]