Ryan S.
Ryan S.
Security engineer | Blockchain Developer

Blog specialized on Security, Crypto and blockchain.

Social
  • Twitter
  • GitHub
  • LinkedIn
  • bsky
    Bluesky

2026 © Ryan S.

    How Aztec Works — Private Execution, Notes and Nullifiers, and a Comparison with Zama FHE, Zcash, Canton and Railgun

    How Aztec Works — Private Execution, Notes and Nullifiers, and a Comparison with Zama FHE, Zcash, Canton and Railgun

    Aztec runs private functions on the user's device and public ones on the sequencer. Notes, nullifiers, what a transaction still leaks, and four rival designs.

    2026, Sep 08   —  31 minute read
    How Fail2Ban Works — Architecture, Privilege Model and Residual Risk

    How Fail2Ban Works — Architecture, Privilege Model and Residual Risk

    Fail2Ban reads logs and rewrites the firewall as root. Its jail architecture, the tag-escaping pipeline, and why a filter regex is a security boundary.

    2026, Sep 03   —  29 minute read
    The Hyperliquid Protocol - HyperCore, HyperEVM and Onchain Perpetual Mechanics

    The Hyperliquid Protocol - HyperCore, HyperEVM and Onchain Perpetual Mechanics

    How Hyperliquid runs a native order book and an EVM under one HyperBFT consensus, and how its margining, oracles, liquidations and HIP standards work.

    2026, Sep 02   —  37 minute read
    Hyperliquid's Onchain Order Book - Matching, Ordering, and How It Differs from a CEX and from GMX

    Hyperliquid's Onchain Order Book - Matching, Ordering, and How It Differs from a CEX and from GMX

    How HyperCore matches orders inside consensus state, why cancels beat aggressive orders in a block, and how that compares with a CEX engine, dYdX v4 and GMX.

    2026, Sep 02   —  25 minute read
    The Hyperliquid Oracle - How Validator Medians Become Mark Price, Funding and Liquidation

    The Hyperliquid Oracle - How Validator Medians Become Mark Price, Funding and Liquidation

    Hyperliquid's oracle is a stake-weighted median of validator medians, published every three seconds. Which price drives funding, margin and liquidation.

    2026, Sep 02   —  24 minute read
    The Hyperliquid Improvement Proposals - HIP-1 to HIP-4

    The Hyperliquid Improvement Proposals - HIP-1 to HIP-4

    HIP-1 tokens, HIP-2 Hyperliquidity, HIP-3 builder-deployed perps and HIP-4 outcome markets, with the stakes, auctions and slashing rules that gate each one.

    2026, Sep 02   —  31 minute read
    Merkle Patricia Forestry on Cardano — How It Differs From Other Merkle Trees

    Merkle Patricia Forestry on Cardano — How It Differs From Other Merkle Trees

    Merkle Patricia Forestry stores a branch's 16 children as a small Merkle tree, so a Cardano proof carries 4 hashes per level instead of 15.

    2026, Aug 28   —  25 minute read
    • View all

      ISO20022

      25 Posts

    • View all

      ZKP

      40 Posts

    • View all

      ai

      15 Posts

    • View all

      blockchain

      170 Posts

    • View all

      blockchainBestOf

      12 Posts

    • View all

      cryptography

      74 Posts

    • View all

      defi

      38 Posts

    • View all

      eli10

      9 Posts

    • View all

      ethereum

      67 Posts

    • View all

      finance

      5 Posts

    • View all

      linux

      18 Posts

    • View all

      network

      46 Posts

    • View all

      oracle

      3 Posts

    • View all

      programmation

      52 Posts

    • View all

      regulation

      5 Posts

    • View all

      rfc

      3 Posts

    • View all

      security

      91 Posts

    • View all

      solana

      12 Posts

    • View all

      solidity

      43 Posts

    • View all

      tryhackme

      4 Posts

    • View all

      wallet

      15 Posts

    • View all

      web

      9 Posts

    • View all

      zama

      6 Posts