CORE VALUES
We pledge to always uphold the highest standards of transparency, trust and talent to ensure that our clients can feel confident in the security services we offer to be the absolute best across the ecosystem.

LEADERSHIP

Meet our team. From building the Solidity compiler and improving the Ethereum Virtual Machine (EVM) to securing the cloud, our backgrounds converge with a shared mission: an unwavering dedication to scaling web3 security.
Hari
HariHarikrishnan Mulackal is a cofounder of Spearbit and well-known as one of the best code optimizers in the world of Solidity. Coming from the Ethereum Foundation (joined in 2020), he is a leading expert in the Ethereum compiler and Ethereum Virtual Machine. With a background in mathematics, Hari formerly worked for the Ethereum Foundation building the Solidity language, and has given numerous technical talks and participated in panel discussions at top blockchain industry conferences.
Alex
AlexAlex Beregszaszi is a cofounder of Spearbit and possesses a deep level of expertise in the Solidity programming language, the Ethereum Virtual Machine and Ethereum. Since 2015 he was an early contributor to and co-lead of the Solidity team at the Ethereum Foundation, as well as being lead of Ipsilon and Ethereum WebAssembly research teams. Alex has delivered numerous presentations at top industry conferences.
Jake Lang
Jake LangJake Lang is a cofounder of Spearbit. Previously, starting 2016, he worked at Ethereum on the Ethereum WebAssembly team (now known as Ipsilon) and has contributed to various improvements to the Ethereum Virtual Machine. He has a background in operating systems, compiler engineering, and cloud security.
Jake Lynch
Jake LynchJake Lynch is a cofounder of Spearbit. Since 2017, Jake has spent his career in crypto researching protocols, economics and working as an investor.

LSRs

Our Lead Security Researchers are the absolute best in their fields. Rest assured - you’re in great hands.
Avatar for 0xicingdeath
@0xicingdeath
Book on Cantina
Avatar for 0xleastwood
@0xleastwoodLiam Eastwood
I like to read code.
Book on Cantina
Avatar for 0xRajeev
@0xRajeev
Raising the bar of Ethereum security, one protocol at a time - WAGMI!
Book on Cantina
Avatar for adiasg
@adiasgAditya
Book on Cantina
Avatar for axic
@axicAlex Beregszaszi
Co-founder of Spearbit and Cantina. Researcher in Ipsilon.xyz. Former co-lead of the Solidity team.
Book on Cantina
Avatar for brockelmore
@brockelmoreBrock Elmore
Book on Cantina
Avatar for chfast
@chfastPaweł Bylica
Book on Cantina
Avatar for chris
@chris
Smart contract and protocol engineer since 2017 with a focus on testing, correctness and security
Book on Cantina
Avatar for chriseth
@chrisethChristian Reitwiessner
Book on Cantina
Avatar for cmichel
@cmichelChristoph Michel
working as a smart contract security researcher since early 2021, having audited 100+ protocols
Book on Cantina
Avatar for deadrosesxyz
@deadrosesxyz
Book on Cantina
Avatar for dmitriia
@dmitriiahyh
Independent researcher, LSR Spearbit, top 5 Sherlock+C4 all time
Book on Cantina
Avatar for D-Nice
@D-NiceDenis Miličević
Smelted by TradFi, forged for a decade in the fires of blockchain and DeFi.
Book on Cantina
Avatar for draganrakita
@draganrakita
Book on Cantina
Avatar for ed25519
@ed25519ed255
zk engineer
Book on Cantina
Avatar for fradamt
@fradamtFrancesco Damato
Book on Cantina
Avatar for GothicShanon89238
@GothicShanon89238
Friendly script kiddie
Book on Cantina
Avatar for gpersoon
@gpersoonGerard Persoon
Doing a security review is like solving a complicated puzzle
Book on Cantina
Avatar for guidovranken
@guidovrankenGuido Vranken
Book on Cantina
Avatar for gumb0
@gumb0Andrei Maiboroda
Researching and developing in Ipsilon team @ EF. Interested in all things Ethereum Execution Layer.
Book on Cantina
Avatar for HickupHH3
@HickupHH3
Securitooor offering byte-sized security reviews
Book on Cantina
Avatar for hjorthjort
@hjorthjortRikard Hjort
Lead security researcher at Spearbit. Web3 security auditor, formal verifier and Urbit enthusiast
Book on Cantina
Avatar for hrkrshnn
@hrkrshnnHari
CEO, co-founder Cantina and Spearbit
Book on Cantina
Avatar for IAm0x52
@IAm0x520x52
You build it, I break it. Helping to secure $250+ million across 100+ protocols.
Book on Cantina
Avatar for Jonah246
@Jonah246Jonah Wu
Independent Security Researcher
Book on Cantina
Avatar for jtraglia
@jtragliaJustin Traglia
A security researcher interested in cryptography, scaling, and MEV
Book on Cantina
Avatar for kmbarry1
@kmbarry1Kurt Barry
Smart contract safety specialist.
Book on Cantina
Avatar for leonardoalt
@leonardoaltLeo Alt
Book on Cantina
Avatar for lightclient
@lightclient
Book on Cantina
Avatar for lonelySloth
@lonelySloth
hunting bugs since 2019. 3M+ in bounties. zk proofs/circuits, go, rust, c++, solidity, etc
Book on Cantina
Avatar for lukasz-glen
@lukasz-glen
math, programming and blockchain
Book on Cantina
Avatar for maxsam4
@maxsam4Mudit Gupta
Book on Cantina
Avatar for MercysJest
@MercysJestWilson Nguyen
I’m a Stanford CS PhD student focusing on ZK Proofs.
Book on Cantina
Avatar for nirvantyagi
@nirvantyagiNirvan Tyagi
Cryptography Researcher
Book on Cantina
Avatar for noah
@noahnoah.eth
Researcher and dev, former Head of Security Reviews @spearbit
Book on Cantina
Avatar for optimumsec
@optimumsecOptimum
LSR at Spearbit, Indie researcher. Previously security researcher for a top tier auditing firm.
Book on Cantina
Avatar for parithoshj
@parithoshj
Book on Cantina
Avatar for r0bert
@r0bert
LSR at Spearbit. Solidity Smart Contract Auditor. Fuzzing freak.
Book on Cantina
Avatar for rholterhus
@rholterhusRiley Holterhus
Full-time smart contract reader, part-time everything else
Book on Cantina
Avatar for rodiazet
@rodiazet
Programmer, mathematician, researcher. Member of ipsilon EF research team. In ecosystem since 2014.
Book on Cantina
Avatar for Saw-mon-and-Natalie
@Saw-mon-and-NatalieSaw-mon and Natalie
Interested to review projects with innovative ideas using higher level mathematics and cryptography.
Book on Cantina
Avatar for schaeff
@schaeffThibaut Schaeffer
Book on Cantina
Avatar for shotes
@shotes
Former Offensive Vulnerability Researcher turned Security Auditor
Book on Cantina
Avatar for shw
@shw
Independent Security Researcher
Book on Cantina
Avatar for skylenet
@skylenetRafael Matias
I run my own nodes. Running blockchain infra since 2018.
Book on Cantina
Avatar for sorpaas
@sorpaasWei Tang
Ethereum and Polkadot core dev. Author of EIP-2200, SputnikVM, and Frontier.
Book on Cantina
Avatar for StErMi
@StErMi
I like to push myself over my limits and always raise the bar of my knowledge and skills.
Book on Cantina
Avatar for xmxanuel
@xmxanuelManuel
Security Researcher | curious, yet I will not forget to pause and ponder
Book on Cantina
Avatar for yoavw
@yoavwYoav Weiss
Book on Cantina
Avatar for zobront
@zobrontZach Obront
bug huntooor
Book on Cantina