Crypto's massive exploit may force big banks to rethink their blockchain plans, Jefferies warns

A major decentralized finance (DeFi) hack could prompt Wall Street firms to reassess the pace of their blockchain and tokenization efforts, a Jefferies analyst wrote in a report.

The note follows a $293 million exploit of Kelp DAO on April 18, in which attackers minted unbacked tokens and used them as collateral to borrow other assets across lending platforms.

The incident, potentially linked to North Korea’s Lazarus Group, has already rippled through crypto markets, triggering sharp token sell-offs and a liquidity crunch in key protocols.

Jefferies analyst Andrew Moss said the fallout may extend beyond crypto-native firms to traditional financial institutions, which have been accelerating efforts to tokenize assets such as funds, bonds and deposits.

“TradFi tokenization initiatives are proliferating as institutional investment accelerates,” Moss wrote. However, the exploit and its “cascading implications” could “temporarily slow TradFi adoption as security risks are re-evaluated.”

The attack exposed vulnerabilities in blockchain “bridges,” which enable the transfer of assets between networks. In this case, the hackers exploited a verification setup that relied on a single validator, raising concerns about single points of failure in systems meant to be decentralized.

For banks and asset managers, these risks matter. Many tokenization efforts depend on cross-chain infrastructure to move assets and maintain liquidity across platforms. Without secure bridges, Moss warned, markets could become fragmented, limiting the usefulness of tokenized assets.

'Nascent' industry

The immediate impact has been severe inside DeFi.

Lending platform Aave AAVE$91.20 was left with roughly $200 million in bad debt, while total value locked dropped by about $9 billion as users withdrew funds. Liquidity in key markets has tightened, with some pools frozen or near full utilization, raising the risk of forced liquidations.