Blockchain services
Smart Contracts Auditing
Our in-house team of security researchers performs comprehensive security audits, focusing on manual code reviews and extensive fuzz testing. Leveraging our battle-tested tooling, we ensure top-tier security. We offer both one-time audits and continuous auditing services to maintain robust security.
Security Tooling Development
Ackee security researchers develop security and developer tooling for Solana, Ethereum, and EVM blockchains. Leveraging our tooling, we have identified medium-to-critical vulnerabilities in industry leaders' smart contracts. We have received development grants from Coinbase and the Solana Foundation for building Wake and Trident, respectively.
Blockchain Security Education
Our team teaches about EVM and blockchain security at Czech Technical University, led by our co-founder and CEO, Josef Gattermayer, Ph.D. As educational partners of the Solana Foundation, we offer Rust and Solana development courses through our School of Solana.
Audits that keep you safe
Based on internal statistics starting 2021.
Protecting $180B+ in TVL
We are long-term security partners of industry leaders such as Lido, Safe, Aave, Kamino, Axelar, and more.
269 criticals and highs in 104 audits
Across 220 audits, we have already discovered over 2500 issues; 10% were rated as critical or high severity.
<1 day to a finding
We discover a critical or high issue every 8 work days. It takes 2 work days to a critical, high, medium or low issue, and less than a day to any finding, as of December 2025.
Our work & open source tools
Our mission is to make blockchain a safer space. To make it happen, we create security open source tools for developers and auditors.

Wake
Wake is a Python-based development and testing framework for Solidity and cross-chain fuzzing.

Solidity (Wake)
Code fast and secure Solidity smart contracts on Ethereum with a remix-like experience for testing contracts inside Visual Studio Code.

Trident
Trident is a Rust-based framework to fuzz and integration test Solana programs to help you ship secure code.

Educating developers about web3
As educational partner of the Solana Foundation we teach developers about Rust, Solana development and security.
Executive team
With years of experience under our belt, we are ready for any challenge.

Josef Gattermayer
CEO and Co-Founder
Co-founder of Ackee & assistant professor at CTU, where he received a doctorate in Distributed Systems. Regular speaker at important blockchain events such as DevCon and Solana Breakpoint.

Tomas Bayer
Chief Operating Officer
Crypto veteran with a background in managing business for several tech companies worldwide. At Ackee Blockchain Security, Tomas provides operations & business development expertise.
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Stepan Sonsky
Ethereum Team Lead
Crypto-anarchist and tech enthusiast with 10+ years experience in software architecture and development. Stepan found passion in white-hat hacking and taking care of our Ethereum team.

Jan Kalivoda
Ethereum Tech Lead
Crypto enthusiast since 2014, EVM maximalist since he wrote his thesis on Bitcoin L2 security. Committed to securing the Ethereum ecosystem towards a Solarpunk future while keeping backdoors for Lunarpunk.

Michal Prevratil
Head of Tooling
Blockchain enthusiast, contributor to the Ethereum Yellow Paper, and a graduate of Computer Security at CTU Prague. Outside of auditing, Michal leads the development of Ackee open-source toolings and products for shipping secure Solidity and Solana code.














