Prompt injection newsletters

NewsletterFIT tracks 7 newsletters that cover Prompt injection as a primary topic, 6 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Adaline Labs (100K), Career Chaos & Cyber Confessions (13K) and NeoSage (10K).

Updated Oct 29, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Adaline Labs 100K subscribers

    Substack Monthly or less · last post Aug 22, 2026

    Likely audience: ML engineers

  2. 2
    Career Chaos & Cyber Confessions 13K subscribers

    Substack Weekly · last post 23 days ago

    Likely audience: Cybersecurity professionals

  3. 3
    NeoSage 10K subscribers

    Substack last post Jul 13, 2026

    Likely audience: CTOs

  4. 4
    Samaipata Insights 8K subscribers

    Substack Monthly or less · last post 36 days ago

    Likely audience: AI security engineers

  5. 5
    Gradient Flow —

    Substack Weekly · last post 23 days ago

    Likely audience: AI engineers

  6. 6
    THE KAWAL BRIEF —

    LinkedIn Every two weeks · last post 3 days ago

    Likely audience: AI safety researchers

  7. 7
    chaos2control —

    Ghost Monthly or less · last post 15 days ago

    Likely audience: AI Security Engineers

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