Decentralized finance (DeFi)

$92M DeFi Drain: Immunefi Data Shows Crypto Hack Surge in April

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A significant surge in cryptocurrency hacks in April has once again cast a shadow over the industry’s efforts to enhance its cybersecurity reputation. According to a recent report by blockchain security firm Immunefi, cybercriminals pilfered over $90 million in digital assets across 15 separate incidents last month. This figure represents a staggering 124% increase compared to the $41 million stolen in March, highlighting the persistent vulnerabilities within the digital asset landscape.

Crypto stole in April 2025
Crypto stole in April 2025. Source: Immunefi

The lion’s share of April’s losses stemmed from a major exploit on the open-source platform UPCX, which accounted for over $70 million in stolen funds. KiloEx experienced the second-largest attack, with hackers making off with $7.5 million. In a rare turn of events, however, the KiloEx exploiter later returned the stolen funds. Notably, all reported attacks in April targeted decentralized finance (DeFi) platforms, while centralized exchanges reported no security breaches during the same period.

DeFi Platforms Remain Prime Targets for Cybercriminals

The concentration of attacks on DeFi platforms underscores the ongoing security challenges within this burgeoning sector of the cryptocurrency market. Immunefi, which claims to protect a substantial $190 billion in user funds, has paid out over $116 million in bounties to ethical “white hat” hackers, indicating the proactive measures being taken to identify and address vulnerabilities. The report arrives on the heels of the largest hack in crypto history, where the Bybit exchange suffered losses exceeding $1.4 billion in February.

Mitchell Amador, Founder and CEO of Immunefi, emphasized the escalating threat posed by state-backed actors. “The sheer scale of the attack shows how state-backed actors are arguably the most pressing threat to our industry,” Amador stated. He stressed the critical need for a “zero-trust” approach within protocols and the implementation of robust security measures across the entire technology stack to preempt such catastrophic attacks.

Also Read: XRPFi Launches Tomorrow: Get Ready for XRP Staking & DeFi on Flare

Experts Call for Enhanced Security Measures and Vigilance

Amador further advocated for the adoption of bug bounties, regular security audits, and formal verifications as essential steps to fortify the security of smart contracts and underlying infrastructure. The alarming figures for April contribute to a concerning trend in 2025, with total losses from cryptocurrency hacks already surpassing $1.7 billion by the end of the month. This already exceeds the estimated $1.49 billion in losses for the entirety of 2024.

Experts like Eric Jardine, Chainalysis’ cybercrimes research Lead, suggest that the lull in activity from the North Korean Lazarus Group in the latter half of 2024 may have been a strategic repositioning in preparation for the massive Bybit hack. This highlights the increasingly sophisticated and potentially state-sponsored nature of cyber threats facing the cryptocurrency industry, demanding heightened vigilance and more robust security protocols across the board.

Disclaimer: The information in this article is for general purposes only and does not constitute financial advice. The author’s views are personal and may not reflect the views of Chain Affairs. Before making any investment decisions, you should always conduct your own research. Chain Affairs is not responsible for any financial losses.

Andrew Chen

I'm a crypto enthusiast with a background in finance. I'm fascinated by the potential of crypto to disrupt traditional financial systems. I'm always on the lookout for new and innovative projects in the space. I believe that crypto has the potential to create a more equitable and inclusive financial system.

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