Top all-time · #21976
Carter Church
Personal blog · carter.church/writeupssecurityai
Carter Church's personal blog at carter.church covers security and ai. Since 2026, 3 different Hacker News readers have linked it 3 times, most often “Breaking the Cipher of the Napoleonic war briefing, unread for 217 years”. It is still writing: the last post was on 2026-09-18, and you can follow it by feed.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
Writeup about an attempt to crack the 217-year-old Napoleonic "Letter to Marmont" cipher with an AI model. Commenters only link it as the original source for the attempt, with no comment on the writing.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Carter Church is a Member of Technical Staff in AI Engineering at SentinelOne. A decade in security operations, now designing and shipping agentic systems for the SOC: autonomous investigation, hyperautomation response, and the evaluation harnesses that make AI agents trustworthy in production. He w
Most-linked posts?
- Breaking the Cipher of the Napoleonic war briefing, unread for 217 years3 people · 3 mentions · first linked 2026-10-01
What Hacker News says?
The original blog post of the person who orchestrated the attempt: https://carter.church/writeups/the-letter-to-marmont/
Comment linking /writeups/the-letter-to-marmont/
on “GPT-6 Astra cracks 217-year-old Napoleonic code in six hours”Submitted Breaking the Cipher of the Napoleonic war briefing, unread for 217 years as a story · 26 points
HN discussionSource: https://carter.church/writeups/the-letter-to-marmont/
Comment linking /writeups/the-letter-to-marmont/
on “ChatGPT-6 Astra cracks 217-year-old Napoleonic code in six hours”