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Client testimonials

Respected as #1 in digital asset security.

36 protocol teams, in their own words, after shipping with Guardian on the other side of the review.

Guardian's commitment to high quality audits, keeping up with industry best practices and alignment between the auditors and the protocol has led to them being a highly valuable partner in improving security of the protocol
X GMX contributor
Our experience with Guardian has been amazing. All security researchers on the team were exceptional at understanding all intricacies of the design and the team is well suited to audit any novel DeFi product that comes their way.
Umami Chan Umami Finance
Extremely proficient. I feel like they care about their contribution on a personal level. They are on a mission to become the best auditors out there. They don't need much guidance and understand the codebase quickly.
0xCalibur Abracadabra Money
We've worked with a variety of audit shops before. Some are complete nightmares. But Guardian has been a delight to work with.
Core Team Buttonwood
Our audit with Guardian way exceeded expectations in terms of the number of vulnerabilities they were able to find and the level of service that they provided.
BP Gamma
As a security audit company, Guardian's approach to security and overall effectiveness is truly exceptional. Working with them has been a revelation – their auditors are among the best we've ever collaborated with.
Slava Gerashenko Orderly Network
10/10 They are hands down some of the absolute best security minds in the space. This is how auditing DeFi protocols should be.
Alphakey Poolshark
Guardian has been an integral part of the growth of GMX and our ecosystem of protocols who also rely on them for audits. Having Guardian as a strategic partner has allowed us to move more quickly while keeping security as our highest priority.
Coinflipcanada GMX
Guardian has an impeccable eye to detail and goes above and beyond to ensure that the code is watertight. They are able to assess super advanced Solidity inline-assembly with ease.
Vectorized Solady Core Contributor
The Guardian team's attention to detail is top-notch. We sleep soundly at night knowing that Guardian went through every detail of our codebase rigorously.
Corey Caplan Dolomite
We very much appreciate Guardian's approach to security and the entire audit process. Guardian goes above and beyond to not only do manual audits but also contributes to verification processes.
Core Team USDT0
Guardian's thorough audit process have left a strong impression on us. Their keen eye for detail and responsive support are qualities that shine through in every engagement.
Core Team LayerZero
10/10, Guardian has throughly evaluated our EVM implementation and has identified design flaws that AI agents can hardly identify.
Core Team MegaETH
10/10. Fast, thorough and cost effective
Core Team Footium
Great references, cross-checked public audit report findings with other auditors on same projects and found that Guardian had great findings
Core Team Longshot
A thorough review, that's the standard for bringing real-world assets onchain.
Core Team Manifest
You guys did an ace job here as always really appreciate your efforts so far
Core Team Ethena
We can't recommend Guardian highly enough. Their team is top-notch: diligent, insightful, and a joy to work with.
Rizzo NFTY Finance
Guardian demonstrated professionalism and attention to detail second to none. They identified issues our other auditors missed.
Dow Magna
Guardian auditors conducted a remarkably thorough review. Their approach was well structured and we greatly appreciated the speed and professionalism of their feedback.
Pierre Tenor
We were impressed with Guardian's overall approach to security, focus on tests, attention to detail and streamlined audit process. We enjoyed working with them.
Ruvaag Sentiment
Great experiences with team. We're impressed by their professionalism, efficiency and quality of work.
Jean MUX
The Guardian team is incredibly knowledgeable, thorough, and mindful. They caught issues that required extensive knowledge of dependencies.
0xQuit YugaLabs
It's clear that Guardian's a team of talented professionals that care deeply about the end outcome.
2pmflow Azuki
Having seen many audits over many years, no one even comes close to Guardian's approach, and the quality of the audit is unmatched.
Kaleb Synthetix
My team and I have worked with many auditors in the past, including generally considered top tier firms. I can confidently say that we have never felt as secure as when working with Guardian.
Indigo Baseline
Great team, great work.
Itamar Reflex
Guardian was an incredible partner in our audit. For each finding, they provided great detail as well as practical recommendations. Highly recommend!
Thomas Kairos
Guardian brought rigorous security to our Bounce Tech smart contracts, finding edge cases and guiding fixes with clear communication.
Chase Bounce Tech
Guardian's pragmatic and business-focused approach to security ensures that every insight is not only technically sound but directly useful for real-world decision-making.
Konstantin Nashpoint
Even with our super tight timeline, Guardian was professional, quick, and thorough, delivering high-quality work right on time. By far the best team we've worked with.
Madiha 246 Club
Guardian found a key bug that had been missed in previous audits, despite being outside the audit's scope. This is an honest signal of commitment and going the extra mile is rare.
Ed Valantis
In our previous engagements, the Guardian team was extremely thorough. I also felt that the two-team approach would give a more in-depth coverage of our codebase.
Jem Olympus
When Cyfrin wants to work with another auditing team, we choose Guardian.
Patrick Collins Cyfrin
Guardian's work helped us not only better secure our smart contracts, but also refine specs and assumptions of the system overall.
Hugo Tenor
Guardian has been an excellent security partner through multiple audits. Their combination of great security researchers and custom fuzz testing is an incredibly strong approach to security. Highly recommend.
Core Team Fastlane

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