Keep Your AI Brain Alive & Safe: Heartbeat, Staleness, Prompt Injection | The Memory Layer, Part 6

Six months from now, your AI brain will tell you an outdated guide is current, and nothing will warn you. In the finale of The Memory Layer, Alex and Josh give the brain a nightly heartbeat that proposes changes for you to approve, put best-before dates on pages, and harden it against prompt injection, invisible Unicode, memory poisoning and leaked secrets. You'll learn: Why a brain that only adds facts can do worse than no memory at all cron vs. launchd: what happens to a scheduled job when your laptop sleeps A propose-only heartbeat: it never edits raw sources or core memory review_after, superseded_by and status: disputed for stale and conflicting pages Invisible ink: hidden Unicode tag characters, and quarantining flagged notes The lethal trifecta, and why the nightly run gets no outbound tools Memory poisoning research, and secrets that leak through notes and sync Team brains with pull requests and CODEOWNERS Keeping a human in the loop: a 10-minute weekly review Lab 6: schedule the heartbeat, then try to poison it Slides (PDF), lab, research brief and transcript: https://github.com/Kinvecta/the-memor... Code and reference vault: https://github.com/Kinvecta/the-memor... Full series:    • The Memory Layer: Build an AI Second Brain   Versión en español:    • Cerebro de IA vivo y seguro: latido e inye...   Chapters: 0:00 Your brain, six months from now 0:34 What you'll learn 0:59 Stale memory is worse than none 1:40 Asleep means late, off means skipped 2:22 The heartbeat proposes, you decide 3:16 Best-before dates for pages 4:01 Invisible ink: clippings are data 4:46 The lethal trifecta 5:18 Memory poisoning 5:56 No secrets in the brain 6:32 Team brains: nothing merges unreviewed 7:04 Keep a human in the loop 7:39 The rule of thumb 7:56 Lab 6: give it a pulse, try to poison it 8:29 Check for understanding 9:11 Six parts, one brain Narration uses AI-generated voices. AI disclosure: this video uses an AI-generated voice (ElevenLabs) and AI-assisted visuals, scripted and reviewed by Kinvecta.