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Overview
Hexens is a blockchain security firm providing smart contract audits, protocol reviews and offensive security testing. Its researchers have found critical vulnerabilities in major layer-2 and zero-knowledge systems. The company works with large protocols as well as institutional clients entering Web3.
News
Quantum Key Distribution: From Theory to Real-World Attacks
Explore how Quantum Key Distribution (QKD) works, from the BB84 protocol and quantum principles to real-world attacks such as photon-number splitting and detector blinding, and how newer approaches address these challenges.
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Report
Glider by Hexens: The Code Query Engine for Smart Contract Security at Scale
Glider by Hexens turns every verified EVM contract into queryable data. Hunt smart contract vulnerabilities across whole blockchains in minutes, not months.
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Report
The Exploit Is the Disclosure: Why On-Chain Hacks Spread Faster Than Patches
In web3, the exploit is the disclosure. It starts a race to copy, not to patch. In a couple of weeks we turned 12 live exploits into detection queries and found 198 confirmed-vulnerable contracts still running on Ethereum and BSC.
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Report
Arbitrary Struct Hijack in Aptos Move VM
TL;DR -- A stale type-tag cache in the Aptos Move VM lets a recycled StructNameIndex map to the wrong StructTag after a partial cache flush, enabling storage-level type confusion. An attacker aligns a look-alike struct onto a victim resource and reads/wri
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Report
Understanding Differential Privacy: Part 2
A hands-on guide to DP-SGD: how it works, how VaultGemma uses it at LLM scale, and what private vs non-private training actually costs on CIFAR-10.
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Report
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Offices
Where the company hires and what each office is for
Cities
2
Hiring now
0
Countries
2
Yerevan
Armenia
HQ
London
United Kingdom
Regional office
71-75 Shelton Street, Covent Garden, London, WC2H 9JQ, GB