Enterprise security newsletters

NewsletterFIT tracks 6 newsletters that cover Enterprise security as a primary topic, 5 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Cybersecurity Club - Learning, Networking & Connecting (7K) and Margins by Ranjan Roy and Can Duruk (35K). Brands detected sponsoring these newsletters recently include Okta and AXA XL.

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

  1. 1
    Cybersecurity Club - Learning, Networking & Connecting 7K subscribers

    Substack Monthly or less · last post 14 days ago

    Likely audience: Compliance Officers

    Sponsors detected: Okta, AXA XL

  2. 2
    WalkingTree Newsletter —

    LinkedIn Every two weeks · last post 14 days ago

    Likely audience: Enterprise leaders

  3. 3
    IT Insights —

    LinkedIn Every two weeks · last post 7 days ago

    Likely audience: IT security professionals

  4. 4
    IT Europa's Weekly Update —

    LinkedIn Every two weeks · last post 7 days ago

    Likely audience: MSPs and Managed Service Providers

  5. 5
    Once More into the Breach —

    LinkedIn Monthly or less · last post 4 days ago

    Likely audience: CISOs and security leaders

  6. 6
    Margins by Ranjan Roy and Can Duruk 35K subscribers

    Substack last post Jul 31, 2025

    Likely audience: Small tech company founders

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