Chain Defenders

Security Was Never This Easy

50K+

Lines Audited

100+

H/Ms Prevented

50+

Audits Completed

Our Security Experts

Meet the Team Behind Chain Defenders

0x539.eth

0x539.eth

Co-founder & Security Researcher

Web3 security sleuth who thrives on outsmarting blackhat hackers, armed with a knack for spotting critical bugs and a belief that competition among auditors is the secret sauce to a safer decentralized world.

PeterSR

PeterSR

Co-founder & Security Researcher

Web3 security enthusiast with a Web2 background at SAP and VMware, obsessed with auditing every spare minute and convinced that fuzz testing and pen-and-paper notes are the keys to crushing vulnerabilities.

Our Process

Precision in Every Step

1

Discovery

We analyze your project requirements and scope.

2

Audit

Thorough security assessment of your smart contracts.

3

Report

Detailed findings and recommendations delivered.

4

Support

Post-audit assistance and verification.

Trusted By

Industry Leaders Partner With Us

Cyfrin
Phi
Size.Credit

Client Success Stories

What Our Clients Say

@Zak3939.eth

@Zak3939.eth

Phi

Having seen their excellent track record on Code4rena, I engaged their audit service and they delivered exactly as expected. The team provided swift responses with clear findings, demonstrating both technical expertise and professional communication through efficient yet thorough analysis. Their excellent balance of quality and speed makes them particularly recommendable for teams seeking rapid turnaround without compromising on audit quality.

@0xpedro_eth

@0xpedro_eth

Zaros

This is probably one of the best findings on this competition that we got till now. Their attention to detail and deep understanding of smart contract vulnerabilities really shone through, helping us secure our platform effectively.

@agfviggiano

@agfviggiano

Size Credit

Our experience with ChainDefenders was smooth from start to finish. They provided a good service, delivering a comprehensive review and valuable recommendations in a timely manner. Their communication style and collaborative approach was very effective. We appreciated their attention to detail and would do business again.

@0xmalcolmm

@0xmalcolmm

The Blackhole Experiment

Working with ChainDefenders was a fantastic experience. They were extremely thorough and delivered an amazing audit on a strict time schedule. They helped us better understand our contracts and the implications of each function. I'll definitely be coming back to them in the future.

@alexroan

@alexroan

Cyfrin

Very readable and clear findings were provided. Some were duplicated but useful nonetheless. Thank you.

@Zak3939.eth

@Zak3939.eth

Phi

Having seen their excellent track record on Code4rena, I engaged their audit service and they delivered exactly as expected. The team provided swift responses with clear findings, demonstrating both technical expertise and professional communication through efficient yet thorough analysis. Their excellent balance of quality and speed makes them particularly recommendable for teams seeking rapid turnaround without compromising on audit quality.

@0xpedro_eth

@0xpedro_eth

Zaros

This is probably one of the best findings on this competition that we got till now. Their attention to detail and deep understanding of smart contract vulnerabilities really shone through, helping us secure our platform effectively.

@agfviggiano

@agfviggiano

Size Credit

Our experience with ChainDefenders was smooth from start to finish. They provided a good service, delivering a comprehensive review and valuable recommendations in a timely manner. Their communication style and collaborative approach was very effective. We appreciated their attention to detail and would do business again.

@0xmalcolmm

@0xmalcolmm

The Blackhole Experiment

Working with ChainDefenders was a fantastic experience. They were extremely thorough and delivered an amazing audit on a strict time schedule. They helped us better understand our contracts and the implications of each function. I'll definitely be coming back to them in the future.

@alexroan

@alexroan

Cyfrin

Very readable and clear findings were provided. Some were duplicated but useful nonetheless. Thank you.

@Zak3939.eth

@Zak3939.eth

Phi

Having seen their excellent track record on Code4rena, I engaged their audit service and they delivered exactly as expected. The team provided swift responses with clear findings, demonstrating both technical expertise and professional communication through efficient yet thorough analysis. Their excellent balance of quality and speed makes them particularly recommendable for teams seeking rapid turnaround without compromising on audit quality.

@0xpedro_eth

@0xpedro_eth

Zaros

This is probably one of the best findings on this competition that we got till now. Their attention to detail and deep understanding of smart contract vulnerabilities really shone through, helping us secure our platform effectively.

@agfviggiano

@agfviggiano

Size Credit

Our experience with ChainDefenders was smooth from start to finish. They provided a good service, delivering a comprehensive review and valuable recommendations in a timely manner. Their communication style and collaborative approach was very effective. We appreciated their attention to detail and would do business again.

@0xmalcolmm

@0xmalcolmm

The Blackhole Experiment

Working with ChainDefenders was a fantastic experience. They were extremely thorough and delivered an amazing audit on a strict time schedule. They helped us better understand our contracts and the implications of each function. I'll definitely be coming back to them in the future.

@alexroan

@alexroan

Cyfrin

Very readable and clear findings were provided. Some were duplicated but useful nonetheless. Thank you.

Our Security Badge

Certified Protection for Your Project

Protected By Chain Defenders Badge

"Protected By Chain Defenders"

After completing a rigorous audit, your project earns this badge - a symbol of security and trust. Display it proudly to show your users that your smart contracts are safeguarded by industry-leading experts.