Best Smart Contract Security Newsletters in 2026

NewsletterFIT tracks 4 newsletters that cover Smart contract security as a primary topic, 3 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are The Variable (7K).

Updated Nov 7, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Galactic Pulse: AI Horizons—

    LinkedInSeveral times a week · last post 11 days ago

    Galactic Pulse: AI Horizons is your gateway to exploring the transformative power of artificial intelligence

    Likely audience: Regulatory compliance officers

  2. 2
    alchemixfi—

    SubstackMonthly or less · last post 17 days ago

    From recent posts: AlchemixFi publishes technical deep dives, governance updates, and launch guides focused on the Alchemix v3 protocol and its migration to the Base blockchain. The publication targets developers and protocol users with…

    Likely audience: DeFi protocol users

  3. 3
    Outis' Substack—

    SubstackMonthly or less · last post 51 days ago

    From recent posts: Outis' Substack publishes essays on Solana blockchain development, prediction markets, and fintech in Nigeria. The publication mixes technical tutorials with market analysis and product updates.

    Likely audience: Solana developers

  4. 4
    The Variable7K subscribers

    Substacklast post Jan 17, 2024

    From recent posts: The Variable publishes technical deep dives into Ethereum security, smart contract mechanics, and DeFi infrastructure for developers and protocol engineers. Content focuses on specific topics such as EOA…

    Likely audience: Blockchain security researchers

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