The 2025 Web3 Cybersecurity Report presents a comprehensive, month-by-month analysis of all major and minor security incidents across the crypto and Web3 ecosystem from January to December 2025. Covering centralized exchanges, DeFi protocols, bridges, wallets, NFTs, social layers, and individual user losses, the report documents how attackers exploited not just smart contract vulnerabilities, but also governance flaws, key management failures, infrastructure weaknesses, and human behavior. Each incident is analysed through a consistent framework (what happened, how it happened, the root cause, and the real-world impact) offering a complete forensic view of the year's threat landscape.
This report is designed to serve both as a historical record and a practical reference for founders, developers, auditors, investors, and security teams. By mapping incidents across ecosystems and attack categories, it reveals clear patterns in attacker behavior and systemic weaknesses in Web3 security architecture. The insights contained here are intended not only to explain what went wrong in 2025, but to help the ecosystem avoid repeating the same mistakes in 2026 and beyond.
.png)