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#2 Bybit Incident: A Web2 Breach Enables the Largest Crypto Hack in History
The largest crypto hack ever, the February 21, 2025 Bybit breach stole about $1.5B after attackers used social engineering to compromise a Safe{Wallet} workflow, injected malicious JavaScript into an AWS S3 bucket, tampered with the transaction signing process, and upgraded Bybit’s Safe{Wallet} contract to a malicious implementation that drained funds across multiple chains.
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.
Security Audit Report for Cakepie Contracts
This is the security audit report that we conducted for Cakepie Contracts in November 2023.
Security Testing Report for Radiant V2
This is the security testing report that we conducted for Radiant V2 in March 2023.
Security Audit Report for LiNEAR
This is the security audit report that we conducted for LiNEAR in April 2022.
Security Audit Report for NearOinDao
This is the security audit report that we conducted for NearOinDao in December 2021.