Web3 is expanding at high speed. DeFi systems change every day. Layer 2 networks are scaling fast. On-chain assets keep growing. Yet the biggest threat remains unchanged: security.
In blockchain, code controls funds, and even a minor logic flaw can lead to massive loss.
BlockSec has seen this risk firsthand. As a global security leader, we have stopped over twenty real-world attacks. We also prevented more than twenty million dollars in damage. This practical experience shapes our audit services. Our approach goes far beyond traditional code scanning. We combine academic depth, real attack knowledge and advanced tooling to provide complete security for both smart contracts and blockchain infrastructure.
BlockSec provides the audit expertise teams need. Whether building a new protocol or a complex financial system, we help you stay safe in a high-risk environment.
Smart Contract Audit: Beyond Code Checks
Basic code scanning is not enough to protect Web3 systems. Many exploited projects had passed audits. The issue was that the audit method did not match the complexity of Web3.
Attacks in Web3 target business logic and economic behavior, not syntax. Smart contracts operate as financial engines, and attackers exploit weaknesses such as faulty price assumptions, weak tokenomics, or unstable state transitions.
BlockSec’s smart contract audit checks both how the code runs and how the logic holds up under pressure. Our security engineers study DeFi interactions, AMM behavior, oracle design, reward systems, staking logic, and state machine transitions to uncover structural risks.
This method ensures that protocols remain stable even when facing aggressive arbitrage strategies or malicious actors.
EVM Chain Audit: Strengthening the Foundation
Smart contracts sit on top of blockchain infrastructure. Weaknesses at the chain level can compromise the entire ecosystem. This is why BlockSec provides deep EVM chain audits and general chain security assessments. Chain audits are complex. They involve virtual machines, consensus, networking, storage systems, and cryptographic design. BlockSec brings unmatched depth in this area. Our research features in top conferences like USENIX ATC, EuroSys, and CCS. We explore topics such as EVM execution, Solana's parallel model, and Layer 2 security.
BlockSec is also invited to speak at ETHCC, Ethereum Berlin, DSS, Solana Summit, and other major technical events, showing our role not as auditors but as contributors to blockchain infrastructure security.
Our chain audit uses differential testing and advanced fuzzing to find hidden inconsistencies and zero-day vulnerabilities. These tools are used by major chains like Solana, Aurora, Moonbeam, Filecoin, and fast L2 systems.
This proven ability to uncover deep technical flaws is one of BlockSec’s core advantages.
Security Insights from Real Attacks
BlockSec uses Phalcon Security. This system monitors attacks in real-time and tracks new behaviors on-chain. This gives our audit team unique visibility into zero-day exploits and emerging threats.
Phalcon detects unusual behavior early, often before losses occur. Our research team quickly analyzes the incident. We reconstruct the attack path, find the main exploit, and trace the flow of funds. These insights directly feed back into our audit process.
There are several examples of our research on security incidents：
https://blocksec.com/blog/in-depth-analysis-the-balancer-v2-exploit
https://blocksec.com/blog/in-depth-analysis-and-reflections-on-the-resupply-protocol-attack-incident
With each new attack, our internal tools and detection rules improve.
We turn real attack chains into:
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Fuzzing cases
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Symbolic execution tests
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Audit checklists
This keeps our audit method aligned with the newest threats.
Why Teams Choose BlockSec for Audits
Research-Driven Expertise
BlockSec’s audit team has researchers, PhDs, and security engineers. They publish in top security conferences like S&P, USENIX Security, NDSS, and CCS. We also partner with universities to support Web3 security education.
Hacker Mindset with Risk-Based Prioritization
A strong audit is not about reviewing every line. It focuses on finding modules that have the biggest financial impact. These include treasury logic, minting controls, bridge systems, and governance. BlockSec focuses audit resources where attackers are most likely to strike.
Advanced Tools with Static, Dynamic, and LLM-enhanced Analysis
We combine traditional analysis tools with AI-driven reasoning. LLMs help interpret logic, while automated systems detect concrete flaws. This improves both audit coverage and efficiency.
Full-Lifecycle Security
BlockSec supports projects beyond audit delivery. We review fixes, offer ongoing security consultation, and provide continuous monitoring through Phalcon Security. This ensures long-term resilience for Web3 systems.
Conclusion: Security as a Competitive Advantage
Security is the one constant in an unpredictable Web3 landscape. BlockSec has audited over 500 projects and helped protect billions in assets. Our audit services combine scientific rigor, real attack experience, and powerful security tools to build strong defenses for both smart contracts and blockchain infrastructure.
To request a smart contract audit or EVM chain audit, visit:
https://blocksec.com/expert-contact?service=codeAuditingService
BlockSec helps your project stay secure from launch to long-term operation.
