Crypto investor loses $1M in Uniswap scam exploiting Ethereum’s EIP-7702
A single phishing attack drained nearly $1 million worth of tokens from a crypto investor who unknowingly signed a batch of malicious transactions disguised as Uniswap swaps, according to blockchain security firm Scam Sniffer.
In an Aug. 22 post on X, Yu Xiang, founder of blockchain security firm SlowMist, noted that the incident involved five tokens siphoned through a transaction exploiting Ethereum’s new EIP-7702 mechanism.
He explained:
“From the perspective of a phished user, it goes like this: the user opens a phishing website, a wallet signature prompt pops up, the user clicks confirm, and with just that one action, all valuable assets in the wallet address vanish in a snap.”
EIP-7702 was introduced in the Pectra upgrade to streamline the Ethereum user experience. The feature allows a wallet to act like a temporary smart contract, making it possible to batch multiple transactions, enable gas sponsorship, or set spending limits in one step.
In principle, the delegation is revocable and network-specific. However, attackers have found ways to weaponize the feature in practice.
Crypto market maker Wintermute has warned that the standard’s implementation is being exploited at scale. Its June analysis showed that more than 90% of EIP-7702 delegations were linked to malicious contracts.
The firm pointed out that many of these contracts are simple copy-paste scripts that scan for vulnerable wallets and drain their holdings automatically.
Considering this, Scam Sniffer and Xiang urged crypto users to take extra care before signing wallet requests. They recommended verifying domain names, avoiding rushed confirmations, and rejecting signatures that seem unclear or overly broad.
They also stated that some of the red flags that could arise include requests for unlimited token approvals, contract upgrades under EIP-7702, or transaction simulations that do not match expectations.
The post Crypto investor loses $1M in Uniswap scam exploiting Ethereum’s EIP-7702 appeared first on CryptoSlate.
Disclaimer: The content of this article solely reflects the author's opinion and does not represent the platform in any capacity. This article is not intended to serve as a reference for making investment decisions.
You may also like
Cardano Foundation unveils zero-knowledge series as ADA drops 2.8% to $0.1725
How much CPO demand will Nvidia Rubin Ultra generate? Bernstein: Optical value per Pod will increase fivefold
Bernstein believes that the co-packaged optics (CPO) and fiber demand driven by Nvidia's Rubin Ultra architecture will surge significantly, with the optical content per Pod rising from $1 million to $5.4 million. This will propel the size of Nvidia's optical ecosystem market to $46.8 billion by 2028 (a 91% annual increase). Although the industry faces supply bottlenecks with InP substrates, the outlook remains positive. The institution reiterates its “outperform” rating for Lumentum, Coherent, and Ciena.
UBS Q3 implements a two-way strategy with gold options, heavily invests in technology stocks, and builds positions in SK Hynix (SKHY.US)
UBS Group (UBS.US) has submitted its Q3 holdings report (13F) as of September 30, 2026.
SpaceX (SPCX.US) reportedly attempts “de-Nvidiaization” at the rack level: developing Kessel cabinets to bypass L6 compute boards, purchasing only chips
SemiAnalysis: SpaceX has developed its own Kessel cabinet, bypassing Nvidia's L6 cards to provide more options for manufacturing its own hardware.
Crypto prices
More
