Kellman Meghu's 'How NOT To Do Security: A Sketchnote'. Absolutely on-target sketchup from 2012, this media bit is like fine wine, it ages well, and will be fit for consumption for longer than most. Common Sense Always Ages Well... You should also read Kellman's latest post, targeting security. Highly recommended. Thanks and a Hat Tip to Phoneboy via his short, but always enjoyable podcast..