[Analysis] April 2026 Crypto Hack Losses Surpass $629 Million... Nearly 4 Times Total Q1 Losses

April 2026 has been recorded as one of the most destructive months in the history of cryptocurrency security. According to data from DeFiLlama, the total amount lost to hacks in the crypto market over the past month exceeded $629 million. This figure is approximately 3.7 to 4 times the total losses of $165.5 million recorded in the first quarter of 2026 (January–March), suggesting a sharp escalation in security threats within the Decentralized Finance (DeFi) ecosystem.

April 2026 became the month with the worst hacking damage in over a year, with more than $606 million drained across 12 incidents. This volume has already exceeded the total losses of the first quarter by more than three times.

This loss scale is the largest on a monthly basis since the $1.4 billion hack on Bybit in February 2025. A total of 12 major security incidents were reported in April alone, with just two large-scale attacks accounting for the majority of the total losses, sending shockwaves through the market. In particular, this series of attacks, which broke the relative calm of the first quarter, demonstrates that attackers' methods have become more sophisticated.

Kelp DAO and Drift Protocol: A $577 Million Chain Reaction

The most significant case occurred between April 18 and 19, 2026, involving Kelp DAO. Kelp DAO, a liquid restaking protocol, had approximately $292 million worth of rsETH stolen through the LayerZero cross-chain bridge. This was recorded as the largest single DeFi hack of 2026 and ranks among the top 10 largest incidents of all time.

• Injection of fake cross-chain messages via compromised RPC nodes
• Exposure of a Single Point of Failure due to a '1-of-1 verifier' configuration
• Contagion of systemic risk across integrated protocols due to uncollateralized rsETH minting

The security crisis in April began on the first of the month, April 1, 2026. Approximately $285 million was drained from Drift Protocol, signaling the start of the massive hacking wave. In the Kelp DAO and Drift Protocol incidents alone, more than $577 million in assets evaporated, accounting for over 90% of April's total losses.

Security experts are once again warning about the vulnerabilities of cross-chain bridges. Bridges are primary targets for hackers because they lock up large amounts of assets and operate through complex smart contracts. As seen in the Kelp DAO case, it has been proven that even audited bridges can have massive amounts of assets drained instantly if flaws are found in the verification system. Advice is mounting for users to limit bridge positions and consider on-chain insurance.

Accelerating Attack Frequency and Threats from Behind-the-Scenes Actors

In 2026, crypto security threats are expanding quantitatively. From the beginning of 2026 to mid-April, a total of 47 DeFi security incidents occurred, an approximately 68% increase compared to the 28 incidents during the same period in 2025. The prevailing analysis is that not only is the frequency of attacks increasing, but the methods are also becoming more sophisticated.

Some of the attacks in April are suspected to be linked to the Lazarus Group, a hacking organization backed by North Korea. Foreign media outlets such as Yahoo Finance have raised the possibility that organized hacking forces were involved in the large-scale drainages in April, reporting that state-level cyber threats are targeting the cryptocurrency market.

As of May 1, 2026, the crypto market is facing a decline in investor confidence, often referred to as the 'DeFi Exodus.' Security researchers are expressing serious concerns about the accelerating pace of attacks and are closely watching whether April's record-breaking losses will continue into May. Market participants agree that the introduction of real-time monitoring and multi-verification systems, going beyond simple code audits, is urgent.