DeFi Hackers Steal $168.6M in Q1 2026 as Crypto Exploits Drop 89% Year-Over-Year

Crypto hackers stole over $168.6 million in cryptocurrency from 34 decentralized finance protocols in the first quarter of 2026, marking an 89% decline from the same period last year, according to data from DefiLlama. The quarterly figure represents a significant drop from the $1.58 billion stolen in Q1 2025, when the industry was rocked by the $1.4 billion Bybit exploit.

The $40 million private key compromise of Step Finance in January was the largest exploit of the quarter, the data shows. The portfolio management platform fell victim to attackers who gained unauthorized access to its private keys, draining funds in what security experts described as a targeted operation.

Following close behind was a smart contract manipulation that drained $26.4 million in ether from Truebit on Jan. 8. The third-largest incident was a private key compromise targeting stablecoin issuer Resolv Labs on March 21, which resulted in significant losses for the protocol.

Despite the declining numbers, security experts caution against interpreting the data as a sign that crypto platforms are becoming safer. Nick Percoco, the chief security officer at crypto exchange Kraken, told Cointelegraph that cybercriminal activity in crypto tends to rise around market and event-driven cycles rather than fixed periods.

Threat actors are drawn to areas where liquidity is concentrated, meaning attack spikes often follow wherever value is accumulating fastest, according to Percoco. “Bull markets, major product launches and fast-moving growth phases all create more attractive conditions for attackers because more value is at stake and new infrastructure can introduce risk,” he said.

Percoco emphasized that attacks are not confined to specific market conditions. “Vulnerabilities can be exploited in any market environment, particularly in complex or rapidly evolving systems, underlining that security in crypto must be continuous,” he added.

See also: North Korean Hackers Behind $285 Million Drift Protocol Exploit, Elliptic Says

The threat landscape facing crypto protocols remains diverse and sophisticated. North Korea-linked actors have been a persistent threat to crypto investors and Web3-native companies alike, with hackers affiliated with the organization suspected of numerous attacks throughout the quarter.

Most recently, hackers were suspected in the Wednesday attack on Drift Protocol, a decentralized cryptocurrency exchange that lost an estimated $285 million to a private key leak. While attribution remains under investigation, the incident demonstrates the ongoing vulnerability of even established protocols.

Percoco described the current threat environment as “a broad and evolving mix” of actors with different levels of sophistication. The landscape includes highly coordinated groups targeting core infrastructure, organized cybercriminal networks and opportunistic hackers scanning for weaknesses in smart contracts and client-facing systems.

“It is a broad and evolving mix, but they are ultimately targeting the same thing: global, liquid and accessible value,” Percoco said. “Targeting is rarely purely random. In many cases, attackers are deliberate in how they assess infrastructure, code, access controls and even human behavior.”

Crypto’s transparency makes it easier for opportunistic actors to spot weaknesses as they emerge, according to Percoco. The most attractive targets tend to be those combining large concentrations of value, technical complexity and gaps in operational security.

Private key compromises represented a significant portion of the quarter’s exploits, with both the Step Finance and Resolv Labs incidents resulting from unauthorized access to critical security credentials. This pattern aligns with predictions from security experts who told Cointelegraph that 2026 would likely see an increase in sophisticated credential theft, social engineering and AI-powered attacks.

The decline in stolen funds during Q1 2026 comes as the crypto industry continues to mature its security practices. However, the persistence of high-profile exploits suggests that significant vulnerabilities remain across DeFi protocols, particularly in areas of key management and smart contract security.

According to DefiLlama’s data, the 34 attacks during the quarter demonstrate that while individual exploit amounts may have decreased, the frequency of attempts against DeFi protocols remains steady. Security professionals continue to stress the importance of continuous monitoring and rapid response capabilities to protect against evolving threats in the decentralized finance ecosystem.