Real audits.
Not rubber stamps.

We don't compromise, so you don't get compromised. Learn why developers, founders, and investors on all chains trust Zellic to get to mainnet faster, more confidently, and without protocol-breaking exploits. Want an audit next week and not next quarter? Let's talk.

We Keep Winners Winning.

Audits That Stop Bugs.

Let the numbers do the talking. Here's how we did in 2022:

55% of Audits

Identified high impact findings. That's 51 out of 93 audits! Over half of customers had serious, latent security issues.

42 Critical Finds

Our audits prevented 42 critical, protocol-breaking vulnerabilities from shipping. That's 42 hacks stopped.

126 High Findings

Finding serious issues is our "normal". What's lurking in your codebase?

Ante Finance

“Zellic is an incredible and fast moving auditing team - on top of extremely timely, technical, and precise responses when asked, they also have found extremely unique and detailed obscure bugs down to the level of the Solidity quirks. The team’s diverse and deep security and hacking experience shows through in conversations, brainstorming, and technical discussions.”


"We've worked with a lot of auditors in the past, and Zellic is one of the best. They deep dive into our contracts, tear everything apart and give us the security we need to secure billions of dollars at Sushi. They're quick, responsive, and very precise while maintaining the highest quality and standards."


“Zellic has been the best auditing firm I've ever worked with.”
“I don't even bother looking at ImmuneFi bounties if they have a Zellic Audit PDF linked.”


“It's been really good actually. I liked the dialogue and general engagement which is much better than some other places. It makes it feel like we're working with our own guys as opposed to a third party.”


We will never leave you on Read.

Developers and founders rave about Zellic. That's because we started with a mission to deliver the best blockchain audits in the world. We saw a maze of subpar providers running automated tools with zero input. Your team deserves better.

We talk to you every day. We keep you involved in the audit process from start to finish. We ask questions. We dive deep to find the unexpected ways things can break.

With Zellic, you get access to the best hackers in the world. Before Zellic, we founded the #1 CTF team worldwide. These CTF competitions attract world-renowned security researchers and white hats to exploit web, desktop, and mobile apps and cryptographic code. We've brought that incredible talent to Web3 to keep your project safe.

What makes Zellic different

  • Unmatched security talent
  • Identify deep flaws and bugs
  • Continual status updates
  • EVM (Solidity)
  • Cosmos (Go)
  • Aptos and Sui (Move)
  • Solana (Rust)
  • Zero-Knowledge (Circom and Halo2)
  • L1, Cross-Chain, Wallets

Our Hackers Defend You

Stephen Tong
Stephen Tong

Stephen is the co-founder and CEO of Zellic. Stephen was inspired to start Zellic after hearing horror stories of terrible audits from founders and builders. He has used crypto since 2015, sending and receiving payments among friends. Before Zellic, Stephen hacked iPhones as a vulnerability researcher at Dataflow Security. Separately, he also worked at the trading firm Two Sigma.  Stephen is a founder of perfect blue, the world’s #1 CTF (competitive hacking) team in 2020 and 2021.

Jasraj Bedi
Jasraj Bedi

Jazzy is the co-founder and CTO of Zellic. Jazzy was inspired to start Zellic after reading countless surface-level, useless audit reports as a DeFi enthusiast. He loves crypto, and is an active trader and user in many different protocols. Before Zellic, Jazzy worked at Google hacking Android. He is a bug bounty veteran, claiming bounties on countless Fortune 500 companies’ programs. Jazzy is a founder of perfect blue, the world’s #1 CTF (competitive hacking) team in 2020 and 2021.

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Secure your future with Zellic.

Join the top protocols relying on Zellic to protect $3B+. Give your users the security they deserve.