Protect your DeFi protocol from every angle. We use a professional Rust smart contract audit to scan for dangerous logic errors and make sure your upgrades and outside links are fully secure for your users.
Smart contract architectureDesign patterns
Business logicEconomic models
Token mechanismsPermission control
Upgradeability and proxygovernance modules
Integration with oracles, bridges, and DeFi protocols
Testing coverage and deploymentOperational securityFirst, we look at your finished code and project plans to decide exactly what to check. We will give you a fair price based on how much work your Rust smart contract audit needs. If you need to keep things private, we can sign a secrecy paper (NDA) before we start.
Planning & Pricing
First, we look at your finished code and project plans to decide exactly what to check. We will give you a fair price based on how much work your Rust smart contract audit needs. If you need to keep things private, we can sign a secrecy paper (NDA) before we start.
Dates & Paperwork
Next, we agree on the costs and how you will pay. We set a clear schedule for your Rust smart contract audit so you know exactly when the work begins and ends.
Finding Bugs & Checking Fixes
Our experts use powerful, special tools to scan your code for any security gaps. We talk to you about every problem we find and help you fix them. Then, we check the new code again to make sure it is safe. For big projects, we might do this several times to be 100% sure.
Final Safety Report
Finally, we give you an official, signed report for your Rust smart contract audit. This paper lists all the risks we found and gives you easy, step-by-step tips on how to keep your project secure.
We mix expert knowledge with our own special tools to make sure your Rust code is safe and works exactly as planned.
“BlockSec has shown remarkable professionalism in smart contract audits. Their expertise in blockchain and smart contract technology, along with a meticulous approach, ensures thorough identification and resolution of security risks. We highly commend their professionalism and anticipate continued collaboration.”
“It's been a fantastic experience collaborating with BlockSec. You have shown your professionalism in the audit field, especially on the smart contract side.”
“With a keen eye for detail, the team identify potential vulnerabilities and provide robust solutions, ensuring our contracts are secure and optimized. For anyone in need of expert smart contract auditing, I cannot recommend BlockSec highly enough.”
“The BlockSec team is very knowledgeable, punctual, responsive, and diligent during the entire audit process. We highly recommend BlockSec for any smart contract protocols who are seeking great value for money in the audit field.”
“I want to extend my sincerest appreciation to BlockSec for conducting a thorough audit of the Stratos project. Their meticulous approach and insightful feedback have significantly contributed to enhancing our project's security and reliability.”
“It's also worthwhile to look into trustworthy auditing companies like @BlockSecTeam. Such audit reports are a gold mine of knowledge ⛏️🕯️”
We make sure your project's economic rules and money flows make sense, protecting you from logic flaws, not just coding errors.
Our reports don't just list problems; they explain exactly what is wrong and give you simple, step-by-step instructions to fix them.
We secure billions of dollars in assets and are the trusted security partner for the biggest names in the Web3 space.
Our founders and auditors are top researchers who publish breakthrough security papers at the world's biggest academic conferences.
~$39.5M Lost: Allbridge, Wanchain & More | BlockSec Weekly
During the week of July 20-26, 2026, 8 notable security incidents resulted in approximately $39.5M in total losses across Solana, Ethereum, BNB Chain, Arbitrum, Zilliqa, and Cardano. The highlighted Allbridge Core incident (~$1.65M) exposed a Solana input validation flaw where the same Pool account was accepted in both swap roles, with analysis reconstructed entirely from the deployed program binary. Other analyzed incidents include Wanchain (~$500K, flawed message encoding in a Cardano bridge validator), Zilliqa (~$400K, flawed nonce generation in a Ledger app since 2019), and Lien Finance (~$542K, flawed validation logic in bond exchange).
Top 10 "Awesome" Security Incidents in 2025
To help the community learn from what happened, BlockSec selected ten incidents that stood out most this year. These cases were chosen not only for the scale of loss, but also for the distinct techniques involved, the unexpected twists in execution, and the new or underexplored attack surfaces they revealed.
Newsletter - December 2025
In December 2025, the DeFi sector encountered three significant security incidents, resulting in total losses of approximately $19.7 million. Yearn Finance faced nearly $10 million in losses due to vulnerabilities in its yETH pool and legacy contracts. Trust Wallet suffered a malicious backdoor attack on its Chrome extension, leading to losses of about $7 million. Ribbon Finance experienced a loss of $2.7 million due to improper access controls.
