Smart Contract Auditors
Trusted security firms reviewed by practitioners. Compare expertise, track record, and pricing.
Trail of Bits
Founded 2012
Notable audits
Compound, Uniswap, MakerDAO
OpenZeppelin
Founded 2015
Notable audits
Aave, Compound, Coinbase
Cyfrin
Founded 2022
Notable audits
Beanstalk, Sudoswap, Sablier
Spearbit
Founded 2021
Notable audits
OpenSea, Morpho, Blast
ConsenSys Diligence
Founded 2017
Notable audits
Aave, Uniswap V3, 0x Protocol
Halborn
Founded 2019
Notable audits
Sushi, ApeCoin, Pangolin
Quantstamp
Founded 2017
Notable audits
MakerDAO, Lido, Polygon
CertiK
Founded 2018
Notable audits
PancakeSwap, Gala Games, Polygon
Sherlock
Founded 2021
Notable audits
Optimism, LooksRare, Notional
Code4rena
Founded 2021
Notable audits
ENS, OpenSea, Canto
Sigma Prime
Founded 2016
Notable audits
Lido, Ethereum Foundation, Synthetix
Runtime Verification
Founded 2010
Notable audits
Ethereum 2.0, Uniswap, MakerDAO
Zellic
Founded 2022
Notable audits
LayerZero, Sui, Worldcoin
Ackee Blockchain
Founded 2017
Notable audits
Solana Foundation, Jet Protocol, Marinade
Hexens
Founded 2021
Notable audits
zkSync, Scroll, Starknet
Dedaub
Founded 2018
Notable audits
Uniswap, Euler, Olympus DAO
Pessimistic
Founded 2021
Notable audits
Lido, 1inch, Symbiosis
OtterSec
Founded 2021
Notable audits
Solana Foundation, Wormhole, Jito Labs
NCC Group
Founded 1999
Notable audits
Zcash, Ethereum Foundation, Protocol Labs
Kudelski Security
Founded 2012
Notable audits
Solana Stake Pool, Lido, Cosmos SDK
Sec3
Founded 2021
Notable audits
Marinade Finance, Raydium, Mango Markets
Neodyme
Founded 2021
Notable audits
Solana Stake Pool, Marinade Finance, Wormhole
Pashov Audit Group
Founded 2023
Notable audits
Aave, Uniswap, Ethena
Guardian Audits
Founded 2022
Notable audits
GMX, Level Finance, GainsNetwork
Cantina
Founded 2023
Notable audits
Ethereum Foundation (Pectra), Aave, Morpho
Hats Finance
Founded 2021
Notable audits
Various DeFi protocols
Hacken
Founded 2017
Notable audits
Binance, Bybit, OKX
Nethermind Security
Founded 2020
Notable audits
World, Starknet, Lido
BlockSec
Founded 2021
Notable audits
MetaMask, Uniswap Foundation, Compound
Veridise
Founded 2021
Notable audits
Risc Zero, Succinct, Linea
zkSecurity
Founded 2022
Notable audits
Various ZK protocols
MixBytes
Founded 2017
Notable audits
Lido, Curve, Yearn
0xMacro
Founded 2022
Notable audits
Thirdweb, Superfluid, Maple Finance
Three Sigma
Founded 2022
Notable audits
Maple Finance, Various DeFi protocols
MoveBit (BitsLab)
Founded 2022
Notable audits
Aptos Foundation, Sui ecosystem projects, Liquidswap
QuillAudits
Founded 2018
Notable audits
Taiko, Polygon, Manta
Oxorio
Founded 2018
Notable audits
Various DeFi protocols
Hashlock
Founded 2020
Notable audits
Various APAC blockchain projects
SigIntZero
Founded 2022
Notable audits
Various DeFi and L1 protocols
Softstack
Founded 2017
Notable audits
Various European blockchain projects
Blaize
Founded 2018
Notable audits
Various DeFi protocols
Certora
Founded 2017
Notable audits
Aave, MakerDAO, Uniswap