DeFi Hacks Surge in 2026, Exposing Major Security Weaknesses in the Crypto Industry

The crypto year 2026 is experiencing more hacks than ever before. The decentralized finance (DeFi) sector, including Ethereum and other cryptocurrencies, has been hit particularly hard, with losses since the start of the year amounting to almost $1 billion.

A day without a crypto hack has become a rarity this year, with April bringing a sad record of almost 30 such incidents. Dozens of decentralized finance (DeFi) projects, often linked to Ethereum, were hit hard. The KELP hack alone caused nearly $300 million in damage and led to investors withdrawing around $15 billion from DeFi. What’s going on, and how do experts assess the situation?

The data service DeFiLlama has compiled a list of crypto hacks and provides information on the methods used. Essentially, each incident is a mystery in itself

Particularly high damages are recorded in attacks on so-called bridges; the KELP hack also falls into this category. Attackers target bridges between different cryptocurrencies and ecosystems. Afterwards, all sides tend to blame each other. “Are we an industry of clowns?” commented Michael Egorov, founder of Curve, in frustration.

– A demand not only from Egorov: The large DeFi ecosystems such as Ethereum , Binance Chain, Tron and Solana should urgently begin exchanging information and cooperating on projects through their foundations to make bridges more secure.

– The second major entry point for DeFi hacks in 2026 is access rights at the executive level; the Drift hack in the Solana ecosystem in early April, with $230 million in damages, was the most serious in this regard.

Attackers, often linked to North Korea, gain access to all crucial administrator passwords during such hacks and can then modify rules. In the Drift case, such access, which normally requires multiple passwords (“multisig”), was no longer a defense because the cybercriminals had gained the administrator’s trust through deception.

Even when unusual transactions are quickly detected, large market participants like Circle, with its stablecoin USDC, struggle to “freeze” their gains. This stems from a mix of legal gray areas and the perhaps outdated ethos of the crypto scene not to “reverse” transactions on the blockchain.

– Crypto hackers are allegedly increasingly using artificial intelligence to hatch their plans. Raz Niv from BlockAid points out, however, that these technologies are also available to defenders, and there is clearly room for improvement in this area.

Following the KELP hack, the crypto industry agreed on a joint fund, “DeFi United,” to compensate victims. However, “smaller” hacks usually result in total loss for the victims. Could an insurance model mitigate these risks?

Conclusion: DeFi investors should understand and analyze the risks

Those who invest conservatively in Bitcoin protect themselves with a hardware wallet, such as one from Ledger, and follow the motto “Not your keys, not your coins.” But those active in the DeFi space inevitably have to temporarily entrust their valuable Ethereum or other altcoins to others so they can generate returns.

It would be negligent not to critically analyze providers beforehand. Is there a compensation fund, like Binance’s, in case of problems? Have those in charge attracted attention for any irregularities in the past? And probably most importantly: Are the expected DeFi interest rates and bonuses even worth the risk? A comprehensive, up-to-date report on DeFi risks from DeFiLlama is available online here and is recommended not only for beginners.

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(Featured image by Glen Carrie via Unsplash)

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First published in Block-Builders.de. A third-party contributor translated and adapted the article from the original. In case of discrepancy, the original will prevail.

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