Andy Koo Profile
Andy Koo

@_nd_koo

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105

Senior Security Researcher @hexensio :)

Joined December 2019
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@_nd_koo
Andy Koo
4 days
RT @xyz_remedy: Uniswap v4 hooks are changing the game, protocol composability up, attack surface even more up. Join our Discord event on….
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@_nd_koo
Andy Koo
12 days
RT @hexensio: ZK has broken out of the crypto bubble. Google Wallet, Cloudflare and EZKL now ship zero-knowledge proofs in production. He….
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@_nd_koo
Andy Koo
14 days
RT @bellis1000: How This Weird Exploit Primitive Corrupts iOS Heap Memory
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@_nd_koo
Andy Koo
15 days
RT @__zkhack__: 🔔 Time for #ZKMeshMini, join us as we unpack the top developments from this past week in the zk-space. 👾 @QuangVDao, @Succ….
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@_nd_koo
Andy Koo
20 days
RT @hexensio: One missing subgroup range-check let attackers duplicate proofs & double-spend:. When curves, fields, and circuits misalign -….
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@_nd_koo
Andy Koo
25 days
RT @hexensio: Hexens is happy to announce the completion of our security review for @zealousswap. The first DEX in Kaspa Ecosystem. Our a….
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@_nd_koo
Andy Koo
25 days
RT @albinowax: I'm thrilled to announce "HTTP/1 Must Die! The Desync Endgame" is coming to #DEFCON33! This talk will feature multiple new….
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@_nd_koo
Andy Koo
27 days
RT @jeppojeps: Thanks y'all for our last live session.In 2 weeks hosting a final session for the @OpenSecTraining E….
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@_nd_koo
Andy Koo
27 days
RT @hexensio: Everyone says “just add randomness” to make STARKs zero-knowledge. Without structured entropy, your witness leaks through LD….
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@_nd_koo
Andy Koo
27 days
RT @cantinaxyz: A landmark moment for @Ethereum security. 🪐. The $2,000,000 Pectra competition, run in collaboration with @ethereumfndn, ha….
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@_nd_koo
Andy Koo
1 month
RT @bot_insane: @hexensio found a really interesting bug in the TRAIN Solver (which could lead to gas griefing the Solver), involving ERC-1….
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@_nd_koo
Andy Koo
1 month
RT @_sarahyo: Okay so this is HUGE - our amazing AI red team have open sourced their AI red team labs so you can set up your own training!….
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@_nd_koo
Andy Koo
2 months
RT @_mr_thank_you_: Tomorrow we will be hosting @GalloDaSballo on Hexen's discord to discuss Recon's new VSCode extension, improve test cov….
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@_nd_koo
Andy Koo
2 months
RT @2ourc3: Just launched Code Auditor CTF — A web platform to practice finding real-world C/C++ vulnerabilities.•….
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@_nd_koo
Andy Koo
2 months
RT @hexensio: In Q1 2025, Hexens audited 49 cutting-edge protocols:. Fintech, DeFi, ZK, staking, cross-chain & more. We’ve made several re….
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@_nd_koo
Andy Koo
2 months
RT @gFL2GeXwrgJDkjM: A bit late to the party, but I just unlocked my skills section on @immunefi and it looks awesome. Great update 🫡 htt….
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@_nd_koo
Andy Koo
3 months
RT @hexensio: Between October'24 and March'25, the number of unique verified smart contracts deployed on Ethereum increased from 700k to 83….
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@_nd_koo
Andy Koo
3 months
RT @hexensio: One step away from the important @tokemakxyz upgrade. autoUSD is right around the corner, stay tuned:.
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@_nd_koo
Andy Koo
4 months
RT @phrack: We heard you needed some more time, so we wanted to let you cook. We decided to push the Phrack 72 CFP deadline back until Ju….
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@_nd_koo
Andy Koo
4 months
RT @hexensio: Big news: Soon Chan is officially joining @hexensio. A hacker who has earned $2.7M+ in bug bounties and ranks #9 of all time….
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