Marissa Bellas

Deployed it. Sold it. Now I answer for it.

Most writing about security and AI comes from one seat. I have sat in three — delivery, then sales, now customer experience — and the view changes more than you would expect between them.

This is a field guide, not a feed. What actually happens when this technology meets a real environment: the practices that hold, the mistakes that repeat, and the ones I made myself.

marissabellas.com
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field-note 01 2026-03-11
pattern 00 ——
postmortem 00 ——
signal 01 2026-09-08

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built 2026-09-10 · static · no trackers

The guide

  • Field notes 01

    A situation from a real deployment — what happened, what it cost, and what I would do differently. Details are composited across engagements.

  • Patterns 00

    The practice that falls out of seeing the same thing go wrong repeatedly. Written to be handed to a team, not admired.

  • Postmortems 00

    Things that went wrong. Mine first, and customers second — with the part I got wrong left in.

  • Signals 01

    What is arriving next, and which assumption it quietly breaks. Less prediction, more consequence.

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