Institutional Grade Smart Contract Security
We help traders, builders and auditors to analyze smart contracts.
- Historical Financial Exploits Found
- 638k
- Funds Saved
- $1+ million
- Potential Funds Saved
- $191 million
D23E's Dashboard
Defense-in-Depth security
- 1. Add Assets/Contracts to Fuzz & Monitor
- Add Target Smart Contracts
- Get Automated Relevant Contract Suggestions
- Focus on Specific Vulnerability Classes
- 2. Reports & Customized Alerts
- Observe Code Coverage Charts
- Ongoing Scan & Found Issues
- 3. Instant prevention
- Get Reproducible Exploits
reentrancy.sol
price_oracle_manipulation.sol
contract Dao {
mapping(address => uint256) public balances;
function deposit() public payable {
require(msg.value >= 1 ether, "Deposits must be no less than 1 Ether");
balances[msg.sender] += msg.value;
}
function withdraw() public {
require(
balances[msg.sender] >= 1 ether,
"Insufficient funds. Cannot withdraw"
);
uint256 bal = balances[msg.sender];
(bool sent, ) = msg.sender.call{value: bal}("");
require(sent, "Failed to withdraw sender's balance");
balances[msg.sender] = 0;
}
function daoBalance() public view returns (uint256) {
return address(this).balance;
}
}
A* Team
CTF successes, bug bounties, and a passion for security. We are a team of security professionals with a passion for blockchain and smart contract security.
Kaihua Qin
Liyi Zhou
Weilin Li
Javier Arredondo
Arthur Gervais
First to Fuzz DeFi with SMT SolversFirst to Quantify MEVImitation Transaction CreatorsTencent CTF'22 #5SCTF'23#5CTFTime'22 Team 0.33%Scapy ContributorDeFi MOOCTop 3 InfoSec Academic @ UKCreator DeFi Security @ ACM CCSProf @ UCLVProf @ ETH ZurichAffProf @ UC Berkeley RDIPhD @ UCLPhD @ ImperialPhD @ ETH Zurich
Everything you need, all-in-one
Customer use cases
- Protocols / DAOs
- Automated Vulnerability Detection
- Customizable Testing Scenarios
- Historical Analysis for Trend Identification
- Asset Manager / Traders
- Dynamic Portfolio Risk Assessment
- Scenario Analysis for Asset Impact
- Regulatory Compliance Support
- Auditors
- Enhanced Code Coverage Insights
- Identify Additional Relevant Contracts
- LLM-guided Fuzzing and Report Generation
- MEV Searchers
- Find Alpha
- Get Ahead of the HFT Game
- Fuzz Competing Searcher Contracts
Monthly plans
Your favorite plan
Starter
Ideal for <500 Lines of Code.
- Ethereum Support
- Snapshot + BruteForce Fuzzing
- 2 contracts/job
- 1 concurrent job
- Relevant contract identification
- 2 vulnerability types
Essential
Everything in Starter, ideal for > 500 LOC.
- Etherem & BSC Support
- 24/7 Cyclic Fuzzing
- Coverage-based Fuzzing
- 5 contracts/job
- 25 vulnerability types
- 3 concurrent jobs
- Email/Slack/Telegram alerts
- Dedicated VM
Entreprise
All from Essential, ideal if TVL > $100k.
- Supporting up to 8 EVMs
- 24/7 Cyclic Fuzzing
- LLM-guided fuzzing (coverage++)
- 20 contracts/job
- 125 vulnerability types
- 5 concurrent jobs
- LLM audit report generation
- Dedicated 64 Core Machine
- Fuzz closed-source contracts