This week I'll tell you about how much fun I had on In Touch with iOS and The Mac Quadcast and Programming By Stealth. Then I'll tell you the secrets of the math behind the Apple Activity Competitions (and how to win). I've decided that Slack is our new home with the demise of Google Plus. I figured a lesson on how Slack works was in order so I'll walk you through the interface. We have a permanent link to join at podfeet.com/slack. In Dumb Question Corner, Rush asks everyone to answer his question on how you choose an Activity goal in Apple's health apps. Then Bart is back with Security Bits where we talk about the Google Plus data breach, a vulnerability in SSH, vulnerabilities in WhatsApp and D-Link routers, and Apple's new privacy portal.