Secure your code pre-launch and block attacks in real-time. Safeguard both user assets and your reputation.
Find and fix critical issues in your smart contracts before you launch.
Make sure your business logic is sound and free of flaws.
Always monitor mempool and on-chain transactions for suspicious activities.
Receive instant alerts on new threats such as oracle manipulation and flash loan attacks.
Block confirmed exploits in real-time to prevent them from draining funds.
Start on-chain responses, such as pausing contracts, to neutralize active threats.
Understand complex attack vectors to gain actionable intelligence. Help you proactively harden your protocol against emerging threats.
Secure Your Protocol Across Its Entire Lifecycle
“Partnering with BlockSec has been crucial to Tokenlon's mission of preserving the openness of DeFi while leveraging technology to create a safer, more trustworthy space for all. BlockSec's cutting-edge on-chain analytics allow us to identify high-risk addresses across multiple blockchains and navigate complex global regulations with confidence. Their expertise helps us safeguard our liquidity partners and consistently deliver a seamless, reliable DeFi experience for genuine users.”
Weekly Web3 Security Incident Roundup | Feb 23 – Mar 1, 2026
During the week of February 23 to March 1, 2026, seven blockchain security incidents were reported with total losses of ~$13M. The incidents affected multiple protocols, exposing critical weaknesses in oracle design/configuration, cryptographic verification, and core business logic. The primary drivers included oracle manipulation/misconfiguration that led to the largest loss at YieldBloxDAO (~$10M), a crypto-proof verification flaw that enabled the FOOMCASH (~$2.26M) exploit, and additional token design and logic errors impacting Ploutos, LAXO, STO, HedgePay, and an unknown contract, underscoring the need for rigorous audits and continuous monitoring across all protocol layers.
Newsletter - February 2026
February 2026 saw three major DeFi security incidents: YieldBlox DAO lost ~$10M due to oracle price manipulation, IoTeX’s ioTube bridge suffered ~$4.4M from a private key compromise, and CrossCurve incurred ~$2.8M after a cross-chain validation bypass.
BlockSec Releases the 2025 Crypto Crime Report
This 67-page report, based on data analysis and on-chain evidence, includes breakdowns of common real-world cases, showing the big picture of cryptocurrency crime in 2025. It also covers the main features, structure, and trends in this field.
For 500+ clients, from Web3 leaders to global regulators
