Sophos experts Chester Wisniewski and Paul Ducklin are back with this week's Chet Chat security podcast, turning plain old news into advice you can use.

In this episode: Warbiking in Manhattan; buffer overflow hubris for Google; why you don't/do/don't/do need anti-virus for Android; what we can do to stop botnets like Gameover recovering after takedowns; and how LibreSSL shows that less can be more when it comes to security.