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Crypto hackers stole $17B over past 10 years: DefiLlama
TL;DR
Crypto hackers have stolen over $17 billion through 518 incidents in the past decade, primarily due to private key compromises. Recent data highlights that wallet security weaknesses are a significant factor in these losses.
Key points
- Hackers stole over $17 billion in the last decade
- 518 recorded incidents of crypto hacks
- Private key compromises are a major attack vector
- Recent hack involved draining 116,500 restaked Ether
- Wallet security weaknesses are a significant factor
Private key compromises are emerging as one of crypto’s costliest attack vectors, with hackers stealing more than $17 billion across 518 recorded incidents over the past decade, according to data platform DefiLlama.
In data shared Tuesday, DefiLlama’s dashboard shows a large share of those incidents stemmed from compromised private keys, alongside phishing and other credential-based attacks. The figures add to evidence that some of the industry’s biggest losses are increasingly coming from weaknesses in wallet security, signing infrastructure and user behavior, rather than from flaws in protocol code alone.
The findings come days after the crypto industry suffered its largest hack so far in 2026 on Saturday, when an attacker drained about 116,500 restaked Ether (rsETH), worth roughly $290 million to $293 million at the time, from Kelp DAO’s LayerZero-powered rsETH bridge.
Source: DefiLlama
DeFi protocols lost $600 million in two months: GSR Research
The recent wave of losses has also hit decentralized finance hard. More than $600 million was stolen from DeFi protocols over the past 60 days, according to a Monday report from crypto trading company GSR, with the Kelp exploit and the April 1 exploit involving Solana-based decentralized exchange Drift Protocol accounting for most of the total.
The attacks are raising new questions about whether improving smart contract audits alone is enough to protect users. In its report, GSR said attackers appear to be shifting toward “operational security, signing infrastructure, developer tooling, and the humans behind them” as smart contract security continues to improve.
That shift is pressuring a sector already facing narrower returns. “DeFi yields have compressed toward TradFi rates, raising the question of whether depositing onchain is still worth the risk,” GSR wrote.
Q&A
How much money has been stolen in crypto hacks over the past decade?
Hackers have stolen more than $17 billion across 518 recorded incidents in the past ten years.
What are the main causes of crypto hacks according to DefiLlama?
The main causes include compromised private keys, phishing, and other credential-based attacks.
What was the largest crypto hack reported in 2026?
The largest hack in 2026 involved an attacker draining approximately 116,500 restaked Ether, worth around $290 million.
What security weaknesses are contributing to crypto losses?
Losses are increasingly attributed to weaknesses in wallet security, signing infrastructure, and user behavior.
