DeFi sector lost a record $630 million in April: what went wrong?
April 2026 became the worst month in the history of decentralized finance (DeFi) in terms of losses. According to analytics firm Memento Research, the sector lost about $630 million during the month. That's more than the entire first quarter combined.
Why this matters for ordinary people
DeFi is a set of financial services running on blockchain without intermediaries like banks. Many people invest their savings there to earn yields higher than bank interest. But when there are holes in the system, money can disappear in minutes. The April attacks showed that risks remain very high.
What happened in April
The biggest blow hit two protocols: Drift and Kelp DAO. They accounted for nearly $600 million in losses — about 95% of all losses for the month. The remaining $30 million were spread across smaller incidents.
For comparison: in January losses were $86 million, in February — $27 million, in March — $52 million. The April spike was 7–20 times higher than previous months.
How it happened: the attack mechanism
Attackers exploited vulnerabilities in smart contracts — programs that automatically manage money in DeFi. In the case of Drift and Kelp DAO, the attacks were complex and multi-stage, but the essence is the same: hackers found a way to trick the code and withdraw funds.
Main types of vulnerabilities in 2026:
- Smart contract bugs — code does not do what it was intended to.
- Bridge attacks — vulnerabilities in systems that transfer assets between different blockchains.
- Oracle manipulation — tampering with price data to steal the difference.
- Lending issues — when borrowed funds are not returned.
What's important
- Record level of losses: April's $630 million is the highest monthly figure in DeFi history.
- Risk concentration: almost all losses came from two protocols, indicating systemic vulnerability in large projects.
- Worsening trend: total losses since the beginning of the year reached $795 million, and the trend is not slowing down.
- Market reaction: after the attacks, liquidity left the sector, yields dropped, users are withdrawing funds.
What this means for ordinary people
If you have cryptocurrency in DeFi protocols, it's worth double-checking what permissions you've given to your wallets. Many attacks happen because users accidentally approve dangerous transactions. Don't keep all assets in one place — diversification reduces risk. And remember: high yields almost always mean high risk.
— Editorial Team
