DeFi Protocol Security Audit
DeFi-native security researchers who understand composability risks, economic attacks, and protocol-specific vulnerability patterns.
DeFi Requires DeFi-Native Auditors
DeFi protocols face unique threats that generic auditors miss: oracle manipulation, flash loan attacks, composability risks, economic exploits, and governance vulnerabilities. Our team has first-hand experience building and securing DeFi protocols — from lending markets to liquid staking to tokenized vaults.
DeFi Vulnerability Categories
Invariant testing is particularly effective for DeFi because it can explore complex multi-step attack paths that manual review alone would miss.
| Vulnerability Category | Example | How Invariant Testing Catches It |
|---|---|---|
| Price Manipulation | Oracle stale price / TWAP manipulation | Fuzzes price feeds across extreme ranges while testing protocol invariants |
| Reentrancy | Cross-function / cross-contract reentrancy | Stateful sequences automatically test callback patterns |
| Economic Exploits | Donation attacks, sandwich extraction | Tests value conservation invariants across arbitrary transaction orderings |
| Access Control | Missing role checks, privilege escalation | Actor-based testing ensures unauthorized callers cannot break invariants |
| Rounding Errors | Share inflation, precision loss in yields | Arithmetic invariants catch rounding issues across millions of operations |
| Liquidation Logic | Cascading liquidations, bad debt accumulation | Stress-tests liquidation paths under extreme market conditions |
DeFi Protocol Types We Audit
We provide specialized security coverage for every major DeFi category:
- Lending protocol security — borrow/repay invariants, liquidation cascading, interest accrual, bad debt prevention (Aave-style, Compound-style, custom architectures)
- Vault security — ERC-4626 share inflation, deposit/withdraw symmetry, ERC-6909 multi-token vault accounting, yield strategy risks
- Oracle manipulation detection — TWAP manipulation, stale price feeds, flash loan oracle attacks, Chainlink integration validation
- Flash loan attack surface analysis — value extraction vectors, atomic arbitrage, donation attacks, sandwich extraction prevention
- Account abstraction wallets — ERC-4337 smart wallet security, bundler integration, paymaster validation, signature verification
- Stablecoin systems — CDP solvency, peg maintenance, collateral ratio invariants, liquidation thresholds
Protocols We've Secured
Our DeFi audit portfolio includes Liquity (BOLD v2), Centrifuge (ERC-7540 vaults), Badger DAO, Corn, Credit Coop, Apollon, Beraborrow, and more. We've helped protect over $3 billion in aggregate TVL across lending, staking, vault, and governance protocols.
Frequently Asked Questions
Do you have experience with lending protocol audits?
Yes. We've audited lending protocols including Liquity v2 (BOLD), and have deep experience with Aave, Compound, and custom lending architectures. Our invariant suites specifically test solvency, liquidation, and interest rate invariants.
Can you audit DeFi protocols with complex composability?
Absolutely. Our invariant testing approach is designed for composability — we test how your protocol behaves when interacting with external contracts, oracles, and other DeFi primitives under adversarial conditions.
Do you test for economic attacks like flash loan exploits?
Yes. Our invariant test suites include value conservation properties that catch economic attacks including flash loan exploits, sandwich extraction, donation attacks, and other value extraction vectors.
How do you handle protocols with upgradeable or proxy contracts?
We audit the implementation contracts and verify that upgrade paths don't introduce storage collisions or break existing invariants. We can also write invariant tests that validate behavior across upgrades.
How much does a DeFi security audit cost?
DeFi audit pricing depends on protocol complexity and scope. A focused DeFi protocol (1,000-5,000 nSLOC) typically runs $30K-$80K for combined manual review and invariant testing. Larger protocols with multiple integrations can reach $120K+. See our full pricing breakdown for details by audit type.
Secure Your DeFi Protocol
Talk to our DeFi security specialists about your protocol's needs.
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