Best Blockchain Security Newsletters in 2026

NewsletterFIT tracks 4 newsletters that cover Blockchain security as a primary topic, 1 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Data Always. (10K).

Updated Nov 11, 2026 · sorted by publicly shown subscribers · methodology

  1. 1

    SubstackSeveral times a week · last post 4 days ago

    Todo lo que necesitas saber sobre crypto, seguridad digital y el futuro de las finanzas descentralizadas.

    Likely audience: Blockchain developers

  2. 2
    Data Always. 10K subscribers

    Substacklast post Feb 24, 2024

    From recent posts: Data Always publishes weekly articles analyzing Ethereum protocol mechanics, Bitcoin blockspace trends, and crypto market economics. The publication targets developers and investors interested in consensus design, MEV…

    Likely audience: DeFi protocol architects

  3. 3

    Substacklast post Feb 5, 2022

    Decentralized Finance and Automated Market Makers

    Likely audience: Crypto investors

  4. 4

    Substacklast post Jul 16, 2025

    A Badger's thoughts on philosophy, politics, and religion.

    Likely audience: Crypto investors

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