Ryan S.
Ryan S.
Security engineer | Blockchain Developer

Blog specialized on Security, Crypto and blockchain.

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2026 © Ryan S.

    Monte Carlo Simulation for DeFi Risk Analysis - From Random Sampling to a Stay-or-Exit Decision

    Monte Carlo Simulation for DeFi Risk Analysis - From Random Sampling to a Stay-or-Exit Decision

    How Monte Carlo simulation works and how it turns a DeFi position's dependencies into a loss distribution, VaR, CVaR and a stay-or-exit decision.

    2026, Oct 10   —  19 minute read
    Crypto Hacks of 2026 So Far - January to September, from Truebit to Bitget

    Crypto Hacks of 2026 So Far - January to September, from Truebit to Bitget

    About $2.1B was stolen in 300+ crypto hacks from January to September 2026. Bitget, Liquid, KelpDAO and Drift took about half, mostly through operators.

    2026, Oct 07   —  32 minute read
    Crypto Hacks of 2024 - DMM Bitcoin, WazirX and a Year of Exchange Breaches

    Crypto Hacks of 2024 - DMM Bitcoin, WazirX and a Year of Exchange Breaches

    About $2.2B was stolen in crypto hacks in 2024. Exchanges lost the most, led by DMM Bitcoin and WazirX, and North Korea took about 61% by Chainalysis' count.

    2026, Oct 07   —  22 minute read
    The Technical Concepts Behind the 2024 Crypto Hacks

    The Technical Concepts Behind the 2024 Crypto Hacks

    What a Solidity developer needs to follow the 2024 hacks: Safe signing and DELEGATECALL, uninitialised upgrades, approval drains, callbacks, rounding, oracles.

    2026, Oct 07   —  23 minute read
    Crypto Hacks of 2023 - Mixin, Euler, the Vyper Bug and Lazarus' Busiest Year

    Crypto Hacks of 2023 - Mixin, Euler, the Vyper Bug and Lazarus' Busiest Year

    About $1.7B was stolen in crypto hacks in 2023. Mixin, Euler, Poloniex and Multichain led, North Korea ran its most incidents, and frauds are listed apart.

    2026, Oct 07   —  21 minute read
    The Technical Concepts Behind the 2023 Crypto Hacks

    The Technical Concepts Behind the 2023 Crypto Hacks

    What a Solidity developer needs to follow the 2023 hacks: Euler self-liquidation, the Vyper lock bug, read-only reentrancy, KyberSwap ticks, MEV-Boost.

    2026, Oct 07   —  18 minute read
    Crypto Hacks of 2022 - Ronin, Wormhole, Nomad and the Year of Bridge Hacks

    Crypto Hacks of 2022 - Ronin, Wormhole, Nomad and the Year of Bridge Hacks

    2022 set a record for crypto hacks, about $3.8B stolen. Bridges lost about $2B, led by Ronin, Wormhole and Nomad; North Korea took the largest share.

    2026, Oct 07   —  21 minute read
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