Losses from cryptocurrency hacks surged past $630 million in April 2026, marking the highest monthly total since February 2025 and underscoring persistent security risks in decentralized finance. According to data from DeFiLlama, the total value hacked in April reached $629.7 million across more than 25 separate incidents, a sharp increase from prior months.
DeFi dominates April’s hack tally
The vast majority of losses came from two major exploits: KelpDAO lost approximately $293 million, while Drift Protocol suffered a $280 million breach. Together, these two incidents accounted for more than 82% of the month’s total. The concentration of losses in a small number of high-profile attacks shows that even as the broader crypto industry improves baseline security, a single sophisticated exploit can still inflict significant damage.
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Attack vectors shift toward off-chain infrastructure
Security experts note that the nature of these attacks is evolving. Yaniv Nissenboim, head of security solutions at Chainalysis, told Cointelegraph that attackers are increasingly targeting off-chain systems rather than smart contract bugs. Entry points include compromised remote procedure call (RPC) nodes, breaches of cloud key management systems, and long-running social engineering campaigns. In many cases, on-chain transactions appear legitimate even as infrastructure layers are already compromised.
Real-time monitoring proves critical
Nissenboim emphasized that real-time monitoring and automated safeguards are becoming essential. In the KelpDAO incident, rapid detection helped prevent a second theft of roughly $95 million. Standard Chartered analysts, led by Geoffrey Kendrick, described the KelpDAO event as a sign of DeFi’s growing resilience rather than a fatal failure, noting that the industry is putting solutions in place to reduce vulnerabilities.
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Conclusion
April’s $630 million in crypto hack losses highlights a persistent challenge for the cryptocurrency sector: while security updates and monitoring improve, well-resourced attackers continue to find new seams between on-chain protocols and off-chain dependencies. The month’s data reinforces the need for layered security approaches and real-time threat detection across the DeFi ecosystem.
FAQs
Q1: What caused the majority of crypto hack losses in April 2026?
Two major DeFi exploits — KelpDAO ($293 million) and Drift Protocol ($280 million) — accounted for over 82% of the total $630 million in losses.
Q2: Are attackers still exploiting smart contract bugs?
Increasingly, attackers are targeting off-chain infrastructure such as RPC nodes, cloud key management systems, and using social engineering, rather than exploiting smart contract vulnerabilities alone.
Q3: How does this compare to previous months?
April 2026 saw the highest monthly hack losses since February 2025, when $1.47 billion was lost. The spike indicates that despite security improvements, large-scale attacks remain a significant risk.
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