ChainSecurity

Trusted by top DeFi engineers since 2017. Born at @ETH_en, ex-@PwC. Probably the most stable team in Web3.

[ChainSecurity @chain_security]

⚠️ It has just been decided to delay the Glamsterdam hard fork on the Hoodi testnet because of security impacts we identified in this blog post: https://t.co/A6rIgIP8zV

We already found 13 real-world examples and are in responsible disclosure with the affected projects.
Please check your contracts as soon as possible, as the EF is determining how many contracts are impacted in which way.

Feel free to reach out to us with questions via [email protected].

[Defi Security Summit @summit_defi]

Doris Benda · DSS 2026

“How clean is your code? Dirty Bits in Solidity”

Explore the talk and add it to your agenda:
https://t.co/V6lL2V5hfG

Tickets: https://t.co/RTbPxGH7zF

[ChainSecurity @chain_security]

@abcoathup dm'd you

[ChainSecurity @chain_security]

⚠️ It has just been decided to delay the Glamsterdam hard fork on the Hoodi testnet because of security impacts we identified in this blog post: https://t.co/A6rIgIP8zV

We already found 13 real-world examples and are in responsible disclosure with the affected projects.
Please check your contracts as soon as possible, as the EF is determining how many contracts are impacted in which way.

Feel free to reach out to us with questions via [email protected].

[Francesco Andreoli ᵍᵐ @francescoswiss]

Glamsterdam testnet delayed. @chain_security found the new gas rules could change how existing contracts handle failed calls, so devs paused Hoodi to review it first. no new date yet

[ChainSecurity @chain_security]

@klarakova 🤝

[ChainSecurity @chain_security]

@aeroxyz 🫡

[ChainSecurity @chain_security]

We've worked with @aeroxyz since day one, from architecture design all the way to the full, final audit.

Excited for the take off. ✈️

[Aero @aeroxyz]

Aero is here 🌤️

Get on board at https://t.co/F6xJ2xYcgY

[ChainSecurity @chain_security]

@aeroxyz ✈️

[ChainSecurity @chain_security]

@aeroxyz @CupOJoseph @sherlockdefi @BaseDollarOrg always a pleasure to work with the @aeroxyz team 🫡

[ChainSecurity @chain_security]

Security for institutions has been in our DNA since our days at PwC Switzerland in 2020.

If you're bringing assets, payments or treasury on-chain, Pietro is the person to talk to at Bluechip26.

📍 Vienna, Nov 10-11. DM us to talk.

[Bluechip @bluechip_org]

🎙️ Pietro Carta (@PtrCarta) is speaking at Bluechip26, the Crypto Safety Conference!

Pietro is Partner & Senior Blockchain Engineer @Chain_Security, one of the longest-standing blockchain security firms, securing critical code & architecture across crypto since 2017.

Bluechip26 is the world’s first and leading conference dedicated to crypto safety. Get tickets at https://t.co/RpMEfcaPGb.

📍 Nov 10-11 in Vienna

[ChainSecurity @chain_security]

@bluechip_org @ptrcarta The team is looking forward!🔥

[Klara Kovačević @klarakova]

@chain_security team is going 🥰

[ChainSecurity @chain_security]

@EmilieRaffo 😁

[ChainSecurity @chain_security]

How likely is an address collision attack at 2⁸¹ hashes?
- Some audit competition reports said 86%.
- In fact it is 63%.

Why? They apply the classic birthday-paradox formula, counting collisions that aren't useful to the attacker. We break down the correct model in this blog: https://t.co/vKM1MhXuca

[ChainSecurity @chain_security]

We're always happy to bring a security perspective to the Vault Summit. This time in Singapore! 🔜

[Vault Summit @Vault__Summit]

ChainSecurity is one of the longest-established blockchain security auditing firms, providing smart contract and blockchain security audits since 2017.

It serves the largest DeFi protocols, including Aave, Lido, Sky, and Polymarket, alongside institutions like Circle, banks, and regulated exchanges.

@Spittfires_, Blockchain Security Engineer at @chain_security, will take the stage at Vault Summit Singapore.

9 October · https://t.co/kTBeCdSJHu

[Klara Kovačević @klarakova]

How to make security interesting to a wider audience?

Apparently, add AI.

Had a great time talking with @pashov, @allypry and @jgattermayer at @ETHSofiaBG.

[ChainSecurity @chain_security]

We're very happy to contribute our engineer time to @stblcnsummit. Meet us in Singapore!

[Stablecoin Summit @stblcnsummit]

ChainSecurity is one of the longest-established blockchain security auditing firms, providing smart contract and blockchain security audits since 2017.

It serves the largest DeFi protocols, including Aave, Lido, Sky, and Polymarket, alongside institutions like Circle, banks, and regulated exchanges.

Yanis De Busschere, Security Engineer @chain_security, moderates the fireside "Purpose-Built Before It Was Cool" at Stablecoin Summit Singapore.

Oct 8 · https://t.co/8GzzWSnsmH

[ChainSecurity @chain_security]

Launching a token means putting critical code under scrutiny. We're happy to provide Charter builders with independent security audits, identify risks before launch and offer a security signal investors and ecosystem partners can rely on.

[Charter Foundation @CharterFnd]

https://t.co/6B7uUKN0Jo