Software security newsletters

NewsletterFIT tracks 3 newsletters that cover Software security as a primary topic, 2 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are The Windows ReadMe (13K).

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

  1. 1
    Beyond The Source —

    Substack Every two weeks · last post 14 days ago

    Likely audience: CISOs

  2. 2
    Saturday Architecture —

    LinkedIn Every two weeks · last post 5 days ago

    Likely audience: Software engineers

  3. 3
    The Windows ReadMe 13K subscribers

    Substack last post Feb 19, 2026

    Likely audience: Windows power users

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