What We Audit in Smart Contracts
We help keep your DeFi protocol safe. We watch your internal logic, system upgrades, and external partners.
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 securityDefine the audit's scope using the final codebase and design documents. We'll create a custom quote based on the project's complexity and specific needs. If needed, we can sign a non-disclosure agreement (NDA) to ensure confidentiality.
Define Scope & Provide Estimate
Define the audit's scope using the final codebase and design documents. We'll create a custom quote based on the project's complexity and specific needs. If needed, we can sign a non-disclosure agreement (NDA) to ensure confidentiality.
Agreement Finalization & Scheduling
Confirm the project terms, including payment details. Also, agree on a clear audit schedule with set start and end dates.
Security Evaluation & Fix Assessment
Perform an in-depth security review using advanced internal tools. The audit findings will be shared with the client, and the proposed fixes will be examined. For complex projects, you may need several review sessions. This helps ensure that everything is covered well.
Final Report & Remediation Recommendations
Deliver a signed report that details all findings, risk assessments, and clear steps to fix the identified issues.
Smart Contract Audit Advantages
We combine a deep understanding of protocols with our own specialized tools. Our team uses advanced testing methods to make sure we check every part of your code.
Audit Reports
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Hear from Our Customers
“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 ⛏️🕯️”
Why Organizations Choose BlockSec
Top-Tier Research Team
Our founders and auditors are top researchers who publish breakthrough security papers at the world's biggest academic conferences.
Deep Code Analysis
We don't just skim the surface; we dive deep into every single line of your code to find hidden bugs that others miss.
Smart Proprietary Tools
We use our own special security tools, such as advanced fuzzers and static analyzers, that no other audit firm has.
Real-Time Hack Blocking
We go beyond audits by offering tools (like Phalcon Security) that can actively stop a hack when it happens to save your funds.
Frequently Asked Questions
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.
Web3 Smart Contract & EVM Chain Audits | BlockSec
BlockSec secures Web3 with attacker-driven audits, chain reviews, and zero-day detection - battle-tested, blocking 20+ hacks and $20M+ losses.
