23 July 2025
$2.3 Billion Lost in H1 2025 The Alarming State of Web3 Security
The first half of 2025 has been nothing short of alarming for the Web3 ecosystem. With over $2.3 billion lost to crypto exploits and security breaches, the space has witnessed an unprecedented spike in attacks, surpassing even the total recorded losses of 2024 in just six months.
This sharp rise in exploits reflects not just the growing adoption of decentralized platforms, but also the increasing sophistication of attackers who are quick to exploit overlooked vulnerabilities.
At QuillAudits, we have been at the forefront of monitoring, analyzing, and auditing these critical incidents. Our recently published H1 2025 Crypto Exploits & Security Breaches Report isn’t just another recap, it’s a comprehensive breakdown of emerging attack patterns, high-profile hacks, and the evolving security landscape shaping Web3 today.
Key Insights from the H1 2025 Report:
- $1.6 billion lost to Access Control Exploits, making it the most damaging category of attacks.
- Social Engineering tactics remain dangerously effective, exploiting human behavior to bypass technical defenses.
- Ethereum leads both in adoption and as a target, suffering $1.59 billion in losses — a stark reminder that mainstream chains attract mainstream threats.
- Major incidents like the Bybit exploit ($1.49B), a $330M Bitcoin user hack, and the Cetus protocol breach ($223M) have sent shockwaves across the industry.
- Shockingly, 95% of total losses came from just three primary vectors — Access Control flaws, Social Engineering attacks, and Integer Overflow bugs.
These findings underscore a critical point: Security can no longer be an afterthought.
Whether you’re a developer, protocol founder, investor, or active participant in the Web3 space, staying ahead of these threats means investing in security practices like regular audits, code reviews, and continuous threat monitoring.
Want to dive deeper?
Download our detailed H1 2025 Crypto Exploits & Security Breaches Report to explore in-depth case studies, attacker techniques, and proactive security measures that can help safeguard your projects against such exploits.
👉 Download the Full H1 Crypto Exploit Report
At QuillAudits, we believe in sharing these insights with the broader community because building a secure decentralized future begins with collective awareness and action.
Don’t wait for a vulnerability to turn into a multimillion-dollar exploit — stay informed, stay secure.