Founded 2022 Public reports
Hire for small-team recurring Solidity/DeFi partnerships rather than high-volume one-offs.
Smart contracts DeFi Protocol design
Notable audits
Thirdweb, Superfluid†, Maple Finance
Sponsored
Advertise here →
Sponsored Listings
Reach founders at the moment they are shopping for security.
Everyone on our auditor directory is comparing auditors and tools before they spend. Three slots, clearly labeled, never mixed into our rankings.
- Labeled, never ranked
- Three slots per page
- No interstitials or pop-ups
Audience
- Auditors
- 42
- Tools
- 64
Traffic and unique-visitor figures are available on request. We do not publish a guessed number.
Smart Contract Auditors
Security firms with public track records. Filter by chain and specialty, then compare up to 3 firms side by side.
Chain
Specialty
Showing 42 of 42 · Order is not a ranking. Featured is explained in our methodology.
Ackee Blockchain
$$ 4.4/5
?
Founded 2021 Public reports
Hire for Solana and EVM audits; makers of the Wake development framework.
Smart contracts Solana DeFi
Notable audits
Lido, Safe, Aave
Founded 2018 Public reports
Hire for full-lifecycle web3 reviews from architecture through post-deployment monitoring.
Smart contracts DeFi NFT
Notable audits
Everstake, Rainbow Bridge, Mysten Labs
Founded 2021 Public reports
Hire when you want audits plus Phalcon monitoring and on-chain incident response.
Smart contracts DeFi Monitoring
Notable audits
MetaMask†, Uniswap Foundation†, Compound†
Founded 2023 Public reports
Hire for flexible contests, managed reviews, or Spearbit guild engagements on one platform.
Smart contracts DeFi Competitive auditing
Notable audits
Ethereum Foundation (Pectra), Aave, Morpho
Founded 2017 Public reports
Hire when you want multi-chain audits paired with CertiK Skynet continuous monitoring.
Smart contracts DeFi NFT
Notable audits
PancakeSwap, Gala Games, Polygon
Founded 2018 Public reports
Hire when you need Certora Prover formal verification across DeFi state spaces.
Formal verification Smart contracts DeFi
Notable audits
Aave, MakerDAO†, Uniswap
Founded 2021 Winding down Public reports
Winding down since May 2026; use its public contest-report archive rather than for new audits.
Smart contracts DeFi Competitive auditing
Notable audits
ENS, OpenSea, Canto
ConsenSys Diligence
$$$ 4.6/5
?
Founded 2017 Public reports
Hire for Ethereum-core DeFi audits; Mythril/Scribble maintainers now at diligence.security.
Smart contracts DeFi Formal verification
Notable audits
Linea, MetaMask, Lido
Founded 2022 Public reports
Hire for EVM DeFi private audits when you also want Aderyn tooling and Cyfrin education.
Smart contracts DeFi NFT
Notable audits
Beanstalk, Sudoswap, Sablier
Founded 2018 Public reports
Hire for complex DeFi bytecode analysis; known for their open-source decompiler tooling.
Smart contracts DeFi Static analysis
Notable audits
Uniswap†, Euler†, Olympus DAO†
Guardian Audits
$$ 4.5/5
?
Founded 2022 Public reports
Hire for DeFi audits that include building a stateful fuzzing suite for the team.
Smart contracts DeFi Fuzzing
Notable audits
GMX, Level Finance†, GainsNetwork†
Founded 2017 Public reports
Hire for large-portfolio multi-chain audits plus exchange proof-of-reserves and compliance work.
Smart contracts DeFi Penetration testing
Notable audits
Binance, Bybit, OKX
Founded 2019 Public reports
Hire when you need smart-contract audits plus pen-test and cloud/DevOps coverage together.
Smart contracts Penetration testing Cloud security
Notable audits
Sushi†, ApeCoin†, Pangolin†
Founded 2020 Public reports
Hire for APAC DeFi and L1 audits; public reports include Rocket Pool, Celo, and Vana.
Smart contracts DeFi NFT
Notable audits
Rocket Pool, 1inch†, SushiSwap†
Hats Finance
$ 4/5
?
Founded 2021 Unavailable Public reports
Hosted operations closed 2025-12-31 (own announcement); on-chain contracts remain under the DAO. Archive only; not hireable.
Smart contracts DeFi Competitive auditing
Notable audits
No named public clients
Founded 2021 Public reports
Hire for cross-chain bridge and L2 infrastructure reviews with an offensive-security focus.
Smart contracts Bridges L2
Notable audits
zkSync, Scroll†, Starknet†
Kudelski Security
$$$ 4.4/5
?
Founded 2012 Public reports
Hire for cryptographic protocol review alongside smart-contract and key-management audits.
Cryptography Smart contracts Protocol design
Notable audits
Solana Stake Pool†, Lido†, Cosmos SDK†
Founded 2017 Public reports
Hire for EVM and Substrate/Polkadot audits with a long public GitHub report archive.
Smart contracts DeFi Substrate
Notable audits
Lido, Curve, Yearn
MoveBit (BitsLab)
$$ 4.3/5
?
Founded 2022 Public reports
Hire for Aptos/Sui Move audits with formal verification and Move Analyzer tooling.
Move Aptos Sui
Notable audits
Aptos Foundation†, Sui ecosystem projects, Liquidswap
Founded 1999 Public reports
Hire when enterprise cryptography depth and traditional security credentials matter for web3.
Cryptography Smart contracts Protocol design
Notable audits
Zcash, Ethereum Foundation, Protocol Labs
Founded 2021 Public reports
Hire for Solana/Rust research-led audits and published SVM vulnerability education.
Solana Smart contracts Rust
Notable audits
Solana Stake Pool, Marinade Finance, Wormhole
Nethermind Security
$$$ 4.6/5
?
Founded 2020 Public reports
Hire for Starknet, ZK, and formal-verification audits from Nethermind’s security practice.
Smart contracts Formal verification ZK proofs
Notable audits
World, Starknet, Lido
OpenZeppelin
$$$ 4.8/5
?
Founded 2015 Public reports
Hire for OpenZeppelin Contracts–aligned Solidity reviews; hosted Defender was retired in July 2026 in favour of open-source Relayer and Monitor.
Smart contracts DeFi Governance
Notable audits
Aave, Compound, Coinbase
Founded 2021 Public reports
Hire for Solana-native (and Move) program audits; public work includes Wormhole and Jito.
Smart contracts Solana Bridges
Notable audits
Solana Foundation†, Wormhole, Jito Labs
Founded 2021 Public reports
Hire when you want limited-concurrency senior EVM DeFi reviews rather than high volume.
Smart contracts DeFi Protocol design
Notable audits
Lido, Aave, 1inch
Pashov Audit Group
$$ 4.7/5
?
Founded 2023 Public reports
Hire for senior multi-researcher DeFi reviews; public reports cover Aave and Uniswap.
Smart contracts DeFi Protocol design
Notable audits
Aave, Uniswap, Ethena
Pessimistic
$$ 4.3/5
?
Founded 2017 Public reports
Hire for mid-market EVM DeFi, bridge, and staking audits with public GitHub reports.
Smart contracts DeFi Bridges
Notable audits
Lido, 1inch, Symbiosis†
Quantstamp
$$ 4.4/5
?
Founded 2017 Public reports
Hire for broad multi-chain DeFi and L2 portfolio reviews with long public audit history.
Smart contracts DeFi NFT
Notable audits
MakerDAO, Lido†, Polygon†
QuillAudits
$ 4/5
?
Founded 2019 Public reports
Hire for broad multi-chain smart-contract coverage across many EVM and L2 stacks.
Smart contracts DeFi NFT
Notable audits
Taiko, Polygon†, Manta†
Runtime Verification
$$$ 4.7/5
?
Founded 2010 Public reports
Hire when you need K Framework/KEVM formal verification, not only manual review.
Formal verification Smart contracts Protocol design
Notable audits
Monad, Espresso Systems, Solana Foundation†
Founded 2021 Public reports
Hire for Solana program audits with X-Ray static analysis and free on-chain monitoring.
Solana Smart contracts Runtime monitoring
Notable audits
Marinade Finance, Raydium†
Founded 2021 Public reports
Hire for contest-style audits with lead auditors from Sherlock’s contest researcher network.
Smart contracts DeFi Protocol design
Notable audits
Optimism, LooksRare, Notional
SigIntZero
$$ 4.3/5
?
Founded 2026
Hire for DeFi and L1/L2 assurance with Sentinel-assisted scanning and Tripwire monitoring.
Smart contracts DeFi L1/L2
Notable audits
No named public clients
Sigma Prime
$$$ 4.7/5
?
Founded 2016 Public reports
Hire for Ethereum consensus, staking, and Rust infrastructure; builders of Lighthouse.
Smart contracts Consensus protocols Staking
Notable audits
Lido, Ethereum Foundation, Synthetix
Founded 2017 Public reports
Hire for European multi-chain smart-contract, dApp, and penetration-testing security engagements.
Smart contracts DeFi Penetration testing
Notable audits
TON Foundation, Ripple, Fetch.ai
Founded 2021 Public reports
Hire for multi-researcher Spearbit guild reviews delivered through Cantina’s platform.
Smart contracts DeFi Protocol design
Notable audits
OpenSea, Morpho, Blast†
Three Sigma
$$ 4.4/5
?
Founded 2022 Public reports
Hire for multi-VM coverage spanning EVM, Solana, and Move (Aptos/Sui) protocols.
Smart contracts DeFi Move
Notable audits
Maple Finance, Aborean Finance, Felix Protocol
Trail of Bits
$$$ 4.9/5
?
Founded 2012 Public reports
Hire for deep protocol and cryptography reviews; maintainers of Slither, Echidna, and Medusa.
Smart contracts Cryptography Protocol design
Notable audits
Compound, Uniswap, MakerDAO†
Founded 2021 Public reports
Hire for ZK circuit audits using formal methods and tools such as Picus.
ZK proofs Formal verification Smart contracts
Notable audits
Risc Zero, Succinct, Linea†
Founded 2021 Public reports
Hire for ZK circuits, bridges, and Move (Aptos/Sui) protocol security reviews.
Smart contracts ZK proofs Bridges
Notable audits
LayerZero, Sui, Worldcoin†
zkSecurity
$$$ 4.5/5
?
Founded 2023 Public reports
Hire for ZK, MPC, and FHE cryptography reviews; maintainers of zkbugs and the noname language.
ZK proofs Cryptography MPC
Notable audits
Solana Foundation†, Aztec, StarkWare
Sponsored
Partners we have relationships with that can improve your security posture
Become a sponsor