Blockchain security by community experts
Ackee Blockchain Security is a team of auditors and white hat hackers who perform security audits and assessments. Our mission is to contribute to a stronger blockchain ecosystem by sharing our knowledge.
Blockchain services

Smart Contracts Auditing
Our team of engineers will perform a security audit, including automated tests, bug bounty contests, tool analysis and manual code review. We offer both one-time audits and continuous auditing as a service.

Smart Contracts Development
Our blockchain developers create secure Ethereum smart contracts on Solidity or develop with Rust on Solana. We can do it from scratch or take over an existing project.

Security Workshops for Developers
Developers impact the project's security the most, and we know how to boost their security skills.
We teach teams how to write cross-chain fuzz tests, security practices and onboard on to security tooling.
Our clients
Audits that keep you safe
Based on the internal statistics of 648 days.
134 audits
Our experience and portfolio speaks for itself - trusted by the industry leaders such as Safe, 1inch or LayerZero.
82 critical and high issues in 77 audits
We have discovered more than 784 issues so far. 10% of them account for critical and high findings.
1 day to an issue
Our auditors discover a critical or high issue every 5 work days. It takes 2 work days to a critical, high, medium or low issue and 1 day to an issue in general.
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.
Learn More
Tools for Solidity
Tools for Solidity is a Visual Studio Code Solidity extension that helps to develop securer smart contracts.
Learn MoreOnboarding developers to Web3
We organize our Solana and Solidity schools where developers are onboarded into web3 and get an Ackee Blockchain certificate.

Summer School of Solidity
Take your technical skills to the next level and get a certification in the Solidity language.

Autumn School of Solana
Take your technical skills to the next level and get a certification in the Rust language and Solana blockchain.
Executive team & advisors
With years of experience under our belt, we are ready for any challenge.

Josef Gattermayer
Managing Partner
Co-founder of Ackee & assistant professor at CTU, where he received a doctorate in Distributed Systems. A 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. He provides expertise in operations and business development here at Ackee Blockchain.

Stepan Sonsky
Ethereum Team Lead
Crypto-anarchist and tech enthusiast with 10+ years experience in software architecture and development. He 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 Solarpunk future while keeping backdoors for Lunarpunk.

Dominik Teiml
Tech Consultant / Auditor
Dominik is a rock-star auditor and contributor to Ethereum Yellow Paper and Slither. Before joining our team, he worked at auditing firms Trail of Bits and CertiK. Dominik has been in love with mathematics since his studies at University of Oxford.
IMPRESSUM
COMPANY NAME:
Ackee Blockchain a. s.
ADDRESS:
PRAGUE OFFICE:
Karolinská
1186 00 Prague
Czech Republic
E-mail: [email protected]
Web: ackeeblockchain.com
COMPANY REGISTRATION / REGISTER COURT
Městský soud v Praze
Slezská 9
120 00 Praha 2
ID: 11811315
MANAGING PARTNER
Josef Gattermayer, PhD.
(Responsible for content according to § 55 para. 2 RStV)