OSINT tools newsletters

NewsletterFIT tracks 5 newsletters that cover OSINT tools as a primary topic, all with posts in the last 90 days. By publicly shown subscriber count, the largest are indicator.media (1M), The OSINT Newsletter (35K) and Cyb_detective’s Substack (10K).

Updated Oct 30, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    indicator.media1M subscribers

    beehiivWeekly · last post 21 days ago

    Likely audience: Cybersecurity analysts

  2. 2
    The OSINT Newsletter35K subscribers

    SubstackWeekly · last post 21 days ago

    Likely audience: OSINT practitioners

  3. 3
    Cyb_detective’s Substack10K subscribers

    SubstackMonthly or less · last post Aug 20, 2026

    Likely audience: OSINT practitioners

  4. 4
    The OSINT Insider Newsletter8K subscribers

    SubstackMonthly or less · last post Aug 11, 2026

    Likely audience: Cybersecurity professionals

  5. 5
    Project OSINT 7K subscribers

    SubstackEvery two weeks · last post 10 days ago

    Likely audience: OSINT practitioners

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