Revolutionising Smart Contract Security: How AI-Powered Auditing is Transforming DeFi Risk Management
This note first lived on this URL when the engineering work was also published as Fair Developers. People still arrive here from that address, including from search and from AI answers. The page stays on Tech Ops Asia. fairdevs.com is still live if you want a dedicated Vietnam team under that name.
AI-powered security tools are changing how teams look at smart contracts and DeFi risk. Total value locked grew faster than the review practice around it. The losses that followed were mostly ordinary bugs: a check in the wrong order, an oracle trusted too far, a function that could be called twice.
What is the current state of smart contract security?
Most audits are still a manual read plus a static-analysis tool. Both are necessary. A manual read is slow and expensive, and a tired reviewer misses a path. A basic scanner is fast and noisy: it flags style issues and misses the attack that depends on how two contracts call each other.
Industry reports put losses from DeFi exploits above $3.8 billion in 2022, with a large share traced to smart contract bugs that a stricter review would have caught. That number is theirs, not a figure we measured. The practical point is the same either way: shipping without a review is how protocols lose the money.
How does AI-powered auditing change the review?
An AI-assisted pass reads the contract the way a second reviewer would on a first sitting. It is good at patterns it has seen: reentrancy, integer overflow and underflow, access-control mistakes, oracle assumptions, flash-loan paths, and bugs that only show up when two functions interact. It is weak on economic design, upgrade admin keys, and anything that lives off-chain.
Treat the model as a filter, not a sign-off. Run it before a human review so the reviewer spends time on the findings that matter. Keep the human review. If a vendor tells you the model replaces the auditor, that is the limit of the product, and you should not buy it on that claim.
| Approach | Best for | Honest limit |
|---|---|---|
| Manual audit firm | A protocol that will hold other people’s money and needs a named reviewer. | Weeks, a queue, and a PDF that is already stale if you change the contract after they sign it. |
| Static analysis only | Catching known syntax and pattern bugs on every commit. | False positives, and silence on business-logic attacks. |
| AI-assisted review | A fast first pass over a large contract, before a person reads it. | It repeats the training set. Novel attacks and admin-key design still need a person. |
| Tech Ops Asia | A Da Nang team that will sit with your engineers, run the assisted pass, and say what we would not ship. | We do not issue an audit certificate, and we do not file anything with a regulator. |
What is ZK Sentinel?
ZK Sentinel is a proof of concept Keith Vaughan is running with the Tech Ops Asia team. The first slice is Avalanche’s EVM-compatible C-Chain. The idea is an AI-assisted review that assumes the contract is unsafe until a check says otherwise, then a human looks at what the model flagged.
It is not a product with a price on this page, and it is not a certified audit. If you want to follow that proof of concept, the note is on zksentinel.com. If you want Tech Ops Asia to look at a contract with you, use the contact below.
- Reentrancy and checks that run after a state change
- Integer overflow and underflow on older compilers
- Access control and privilege paths, including a missing onlyOwner
- Oracle reads that a caller can move inside one transaction
- Flash-loan paths that make a “large balance” assumption free
- Bugs that only appear when two functions share state
What should a team actually do before mainnet?
Put the assisted scan in the pipeline so every commit gets the pattern check. Then pay for a person, inside the team or outside it, to read the functions that move value. Freeze the bytecode you reviewed. If you patch after the review, the review is void.
We do not claim an ISO stamp or an ASME process for this. Those labels do not make a contract safe. The useful standard is the one your own deployment uses: tests for the known attacks, a diff against the reviewed commit, and a written list of what you chose to leave open.
Where does Tech Ops Asia fit?
Công ty TNHH Tech Ops Asia is a multi-disciplinary technical consulting agency in Da Nang. Smart contract review is one kind of technical brief, next to engineering teams, AI workshops, and an operating-controls read when personal data is in the system. Marketing and events are here when the work needs customers in a room. They are not this page.
Dedicated Vietnam teams are also published at Fair Developers. That site is still live. We do not redirect this domain there, or the other way around. If your brief is “a squad that already works together,” either site can start the conversation. If your brief is this review, start here.
Want a read of the contract before you ship it?
Tell us the chain, the commit, and whether value can move. We will say if an assisted pass plus a human read is the right next step. We will not send you a certificate.
FAQ
What is ZK Sentinel and how does it relate to smart contract security?
It is a proof of concept for AI-assisted smart contract review, run by Keith Vaughan with this team, starting on Avalanche’s C-Chain. It is not a certified audit and not something you buy on this page.
How does AI-powered auditing compare to a traditional review?
The model is faster on repeated bug patterns. A person is still required for business logic, upgrade keys, and attacks the model has not seen. Use both.
What vulnerabilities can an AI-assisted pass catch?
Reentrancy, integer overflow and underflow, access-control mistakes, shaky oracle assumptions, flash-loan paths, and some cross-function bugs. It will not catch a novel economic attack that is not in the code as a known shape.
How much has been lost to DeFi exploits?
Industry reports put 2022 losses above $3.8 billion, much of it from smart contract bugs. That is their figure. We are not republishing it as our own research.
Do you certify a smart contract audit?
No. We review with you and say what we would not ship. A certificate, if you need one for a listing or a partner, comes from an audit firm that issues them.