Introducing Code4rena Pro League: The elite tier of professional security researchers.Learn more →

Secure your
smart contracts.

Top auditors compete to keep high severity bugs out of production. Get deep analysis with a full audit, then set up bug bounties for ongoing protection.

1,281

unique
high-severity vulns

24,626

unique findings

8,300+

registered wardens

350

audits completed

Waves

Leading crypto projects choose Code4rena.

There's a reason why.

Don't just take our word for it.

Quote icon

"Code4rena is a terrific way to quickly get a lot of talented eyes on your smart contract code, and to receive valuable feedback from security researchers. C4 is neither a traditional “audit”, nor a bug bounty, but rather occupies a unique niche, making it a valuable addition to the smart contract security toolbox."

TokenPhysicist's profile pic
EigenLayer
Quote icon

"There are many facets to correct and secure code: incentive design, bug-free code, knowledge of protocols, ERC standards, mathematics and more. Every protocol is different. Code4rena fosters an open security community whose broad skillset can fit the needs of any audit. It's the best value in smart contract security."

Brendan's profile pic
Co-founder of PoolTogether
Quote icon

"With C4, it’s like an order of magnitude improvement over other ways of doing audits. The number of bugs, the degree to which I was convinced people had looked into the code and found everything to be found, was much higher due to the engagement, the variety of things reported, and the incentive mechanism."

Reserve Protocol's profile pic
Code4rena Sponsor
Quote icon

"One of the things I enjoy most about competing on @code4rena is getting to read lots of code and see new techniques in the wild."

Horsefacts's profile pic
Code4rena Warden
Quote icon

"After grinding for 14 months I finally reached my goal of being the first to cross 1M$ on the @code4rena leaderboard. Thanks to everyone involved, this has been very fun, lucrative, and I learned a lot by seeing other wardens' vulnerabilities that I missed."

cmichel's profile pic
Code4rena Warden
Quote icon

"We greatly enjoyed our @code4rena experience - here's why it is the best value in auditing: quick spin-up time, flexible bounty awards, open nature means more eyes on your code, by our count ~10x more vs traditional audit shops, helpful community of wardens and judges"

Benjamin Hughes's profile pic
Co-founder of Rubicon
Quote icon

"Just went through the latest @code4rena audit report of the @blur_io exchange. This report is a great example of why audits are so important - wardens were able to discover a high risk exploit that would've allowed sellers to steal funds from buyers."

cygaar's profile pic
Code4rena Warden
Quote icon

"These @code4rena payouts are ridiculous. I'm tempted to drop everything and tunnel vision that"

DeGatchi's profile pic
Code4rena Warden
Quote icon

"C4 wardens > any single audit shop IMO"

@_benjaminhughes's profile pic
Co-founder of Rubicon
Quote icon

"Thank you to all of the wardens who have been working on our code base. So many great questions and so many many of them. I hope you'll all come try it out when we're live and critique the user experience from top to bottom. 10/10 would work with y'all again."

androolloyd's profile pic
androolloyd
Astaria
Quote icon

"Our experience with Code4rena has been great. After a very short lead time and smooth onboarding, many experienced security researchers analyzed our code in depth and provided valuable feedback. In addition to security-related findings, we also received useful optimization suggestions."

Canto Identity Protocol's profile pic
Code4rena Sponsor
Quote icon

"I think @code4rena is a 10x improvement on smart contract audits. They're timely, have transparent pricing and source a lot of great developer attention."

Jacob's profile pic
Nouns Builder

Are you ready?

The best time to secure your project is now.

Get Started