Ryan S.
Ryan S.
Security engineer | Blockchain Developer

Blog specialized on Security, Crypto and blockchain.

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2026 © Ryan S.

    Stellar Classic Assets — How They Work, and How They Map to ERC-20 and ERC-7943

    Stellar Classic Assets — How They Work, and How They Map to ERC-20 and ERC-7943

    How Stellar Classic assets work (trustlines, issuer flags, clawback), how they map to ERC-20 and ERC-7943, and when to move to SEP-8 or a SEP-41 token.

    2026, Oct 15   —  23 minute read
    AppArmor on Ubuntu, User Namespace Restrictions, and Why sol2uml Cannot Export a PNG

    AppArmor on Ubuntu, User Namespace Restrictions, and Why sol2uml Cannot Export a PNG

    How Ubuntu uses AppArmor to restrict unprivileged user namespaces, why that stops the headless Chrome behind sol2uml's PNG export, and five remediations.

    2026, Oct 15   —  15 minute read
    How Fireblocks Works - MPC Custody, Enclaves, HSMs and Lessons from Real Hacks

    How Fireblocks Works - MPC Custody, Enclaves, HSMs and Lessons from Real Hacks

    How Fireblocks secures keys with MPC-CMP, SGX and AWS Nitro co-signers and HSM Key Link, and how it compares with Safe multisig after the Bybit hack.

    2026, Oct 14   —  30 minute read
    How Charrette Works: Architecture of an Agent Skill Collection That Plans Before It Codes

    How Charrette Works: Architecture of an Agent Skill Collection That Plans Before It Codes

    Charrette's architecture explained: the plan loop, the tracker protocol, the orchestrator mandate, the aiview viewer, the swarm board and the release mechanics.

    2026, Oct 13   —  21 minute read
    Risk of a Zama Confidential Morpho Vault - Losses, Exits, Contagion and What Can Be Watched

    Risk of a Zama Confidential Morpho Vault - Losses, Exits, Contagion and What Can Be Watched

    Analysing a Morpho vault entered through Zama: who bears a loss, the two exits and their delay, contagion through markets and decryption, what stays public.

    2026, Oct 11   —  15 minute read
    The PT-reUSD Liquidations on Morpho - How a 320,000 SY Trade Liquidated 36M, Replayed from On-Chain State

    The PT-reUSD Liquidations on Morpho - How a 320,000 SY Trade Liquidated 36M, Replayed from On-Chain State

    On 25 August 2026 a 320,000 SY trade on Pendle liquidated 36M of Morpho loans. The mechanism from the code, and a replay that predicts the same 20 positions.

    2026, Oct 11   —  15 minute read
    Pricing a Lending Position During an Incident - What the Oracle Reads, When, and Who Bears the Gap

    Pricing a Lending Position During an Incident - What the Oracle Reads, When, and Who Bears the Gap

    When collateral loses value, a lending market sees only its oracle. How each oracle kind passes a shock on, and how to price liquidations, bad debt and drains.

    2026, Oct 11   —  19 minute read
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