January 9, 2026, the decentralized trading protocol Uniswap recorded a historic day. On-chain data shows that its daily trading fees exceeded $1.4 million, setting a new all-time high since the platform’s inception.
However, unlike natural market expansion, this surge in Uniswap fees was not driven by healthy growth but was triggered by a panic sell-off caused by a major crypto hacking incident, becoming a typical case of DeFi risk discussion in early 2026.
On-chain data indicates that over 90% of the fee revenue came from TRU token transactions related to the Truebit protocol. Previously, Truebit suffered a severe smart contract vulnerability attack, where hackers exploited an old contract flaw to mint大量 TRU at almost zero cost and quickly sold them for ETH, stealing approximately 8,500 ETH, worth about $26 million.
After the incident was exposed, the market quickly plunged into panic. A large number of token holders flooded into Uniswap to sell TRU, causing a surge in liquidity pool trading volume. Just the TRU token alone contributed about $1.3 million in single-day fees for Uniswap. This also explains why Uniswap was able to set a new fee record in a very short period.
From a project background perspective, Truebit is an early Ethereum ecosystem project aimed at enabling off-chain complex computations with on-chain verification. However, outdated contracts that were not properly decommissioned became attack vectors. Within just a few hours, the TRU price dropped from about $0.07 to nearly zero, almost erasing its entire market value. The Truebit team subsequently confirmed the security incident and warned users to stop interacting with related contracts.
This incident highlights the dual nature of DeFi. On one hand, Uniswap maintained normal operation under extreme trading pressure, demonstrating the resilience of decentralized liquidity protocols; on the other hand, it exposed systemic risks caused by insufficient long-term maintenance and auditing of smart contracts. High trading volume does not necessarily indicate ecological prosperity; sometimes, it is driven by panic and liquidation.
For crypto market participants, this event serves as a wake-up call for 2026. Whether established projects or emerging protocols, smart contract risks always exist. Behind Uniswap’s record-breaking fee achievement, it also reminds the market: in the DeFi world, gains and risks are often amplified together.
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