Top 3 Audit Companies on Solana: Based on Real Experience
If you want to build more trust with your community, you need audit firms that can review your smart contracts.
Trust is hard to earn in crypto today, no matter what kind of project you are building. That is where auditors come in: they help you present your company to the market with a strong third-party signal.
In this top 3, we will share our take on the 3 best Solana auditors based on every firm we have tested (and we have tested a lot), focusing on the ones with the strictest and most transparent processes.
What is a Solana audit?
A Solana audit is a third-party review that checks a Smart Contract for vulnerabilities, provides feedback to fix issues, and then publishes the full process to a GitHub repository as a formal report.
Audits are essential in Solana because they give users a strong signal on which contracts are safe and which are not. That helps people decide whether to connect their wallet to a dApp.
Top 3 Solana auditors
Smithii has audits from several dApp auditors, and we’ll cover the best ones in this ranking. Learning how to identify their certificates matters, because it helps you stay safer in the ecosystem and separate trustworthy platforms from risky ones.
With that said, let’s get into the Top 3 crypto audit companies.
1- Halborn
Halborn is basically the gold standard for Solana. You can see that in its client portfolio, which is one of the largest and most respected in the entire ecosystem.
They also move fast and work with a lot of autonomy. Once they have access to the repositories, their team starts the audit and then delivers feedback in a format that is easy to read and understand.
One thing we really liked about Halborn (and you probably will not see this written anywhere unless you have worked with them) is that they stay close to the client throughout the entire process, including during feedback.
If you want to look at some audits completed by Halborn, here are a few examples.
Smithii Vesting Audit
Our vesting audit is public and was published on Halborn’s own website, so you can access the report. In short, vesting is the tool we provide so users can lock part of a token’s supply and give the community more transparency.
For us, it is important that project creators can lock their tokens and that everyone else can verify those tokens are locked. With the vesting tool, users can lock tokens and share the certificate issued by our platform.
During the audit, Halborn reviewed the following areas:
- Major security vulnerabilities in the code.
- Verification of the overall locking methodology.
- Checks to confirm that only authorized parties can perform sensitive actions.
- Assessment of the management state to validate update functions.
- Review of logic flaws that could trigger unexpected program behavior.
- Adherence to best practices for development on Solana.
The audit found 0 critical issues, 0 high-risk issues, 1 logic issue, and 1 minor issue, along with 5 code-justification recommendations. Smithii moved immediately to apply the recommendations.
You may also find this useful: how to use the vesting tool on Solana from Smithii.
Ripple Audit
Halborn has completed four separate audits for Ripple: Credentials, Permissioned Domains, Batch Transactions, and Single Asset Vault.
The scope covered identity and roles, domain-based access controls, atomicity in grouped operations, and granular asset custody. That kind of work forces a full review of logic, permissions, and cross-module attack vectors in a mature layer 1 stack.
If you are launching a memecoin with more complex utilities or tooling, this Ripple case shows that Halborn can scale from simple smart contracts all the way to protocol-level changes.
2- CoinFabrik
CoinFabrik is a strong, accessible choice in web3: a decade of audits, 200+ multichain projects, and a clear focus on Solana (SPL programs, DeFi, and NFT infra).
That track record, visible in its public audit repo and in its role across initiatives like Polkadot Assurance Legion and Stellar Audit Bank, gives CoinFabrik a level of credibility few teams can match.
Like Halborn, they move fast and independently: once they get repo access, their team starts with manual review, static analysis, and their own fuzzing workflows; within a few days, they deliver a clear, prioritized report that devs can act on quickly.
What sets CoinFabrik apart is its hands-on post-audit support: they validate patches, document reproducible tests, and, if you need it, integrate their Scout framework for continuous checks. That close support during and after feedback helps make sure every issue is truly closed before launch.
Here are a few examples of audits they have delivered.
Allbridge Audit
An end-to-end review of the smart contract connecting EVM with Solana. The team found 0 critical issues, 2 medium issues, and 1 minor issue, strengthened the fee logic, improved signature checks, and validated the patches before the mainnet merge. You can read the Allbridge report in CoinFabrik’s repository to get the full breakdown.
Smithii Audit
CoinFabrik handled a contract review across every tool deployed by Smithii on every chain under the Mantis protocol. CoinFabrik tightened the overflow checks, analyzed smart contract vulnerabilities, and delivered a reproducible test suite that is now part of Smithii’s day-to-day workflow.
Smithii delegated its entire infrastructure to CoinFabrik for a full, end-to-end audit to assess and fix potential vulnerabilities. Every recommendation and warning has now been addressed, strengthening our mission as dApp on Solana.
3 – OtterSec
A Solana-native firm that combines formal verification, differential fuzzing, and incident response. It works with the Solana Foundation and has protected more than 36 B USD in on-chain TVL. Its “audit-plus-monitor” model includes on-chain alerts while your program is running.
Looking through its audit portfolio, these are some examples.
Raydium CLMM (Concentrated Liquidity) audit
OtterSec plays a major role here: it audited the CLMMs for Raydium, the most important dex across Solana. That report sits alongside many other audits for leading DEX on Solana and other blockchains.
The team reviewed the new concentrated AMM and order-book refactor, covering pools, staking, and farming while closing ordering risks and tick-abuse vectors before the public launch. The audit results are public and can be viewed in the Raydium repository or OtterSec’s repo.
Jito Labs (Re)staking Program Audit
OtterSec reviewed permissions and multi-asset vaults. The team found a bug that allowed withdrawal tickets to be bypassed, with 8 findings in total, all resolved before mainnet, as shown in the final report.
One point worth calling out: OtterSec delivered Jito’s preliminary report in under 3 weeks, despite Jito being a company with massive technical complexity and volume.
Frequently Asked Questions
How much does it cost to audit my Solana contracts?
The typical range is 5 000 to 50 000 USD. Halborn and OtterSec sit at the higher end because of their senior teams and formal verification work; CoinFabrik offers more accessible pricing for MVPs or complex memecoins while keeping continuous QA in place.
Do I need more than one audit?
If your TVL is aiming to break $1M or you are adding permissionless composability, it is worth getting two independent reviews. A common setup is a first pass with CoinFabrik for a fast smoke test, followed by OtterSec or Halborn for the final deep dive.
Does an audit guarantee there will be no hacks?
No. It cuts risk dramatically, but security is a continuous process: on-chain monitoring, bug bounties, dependency updates, and fresh analysis after every upgrade. A one-off audit with no follow-up leaves blind spots.
Who uses audits?
Third-party audits are essential for decentralized ecosystems. Teams that want to build dApps or launch any Web3 project publicly rely on auditors to verify code security, architecture, and transparency.
Conclusion
To launch fast and build trust from day one, combine CoinFabrik’s speed with OtterSec’s formal verification and real-time coverage (or Halborn’s enterprise stamp). This hybrid approach balances cost, speed, and credibility, strengthens your community’s confidence in the project, and improves your chances of attracting liquidity as soon as your token hits the market.
Industrial Engineer turned Solana trader. Marketing at Smithii and contributor to the $SHRIMP memecoin launch.
