According to DL News, the Ethereum Foundation has awarded a $50,000 bug bounty to the security team Trust Security for discovering a "high severity" attack vector in ERC-4337 (Account Abstraction). The issue can be used to carry out "censorship/harassment" attacks on account abstraction transactions (causing valid and correctly signed transactions to be maliciously rolled back and gas to be consumed). The Ethereum Foundation stated that the fix has been implemented in the latest version and recommends that relevant protocols upgrade as soon as possible.

Tap to Trade in Gate Square, Win up to 50 GT & Merch!
Click the trading widget in Gate Square content, complete a transaction, and take home 50 GT, Position Experience Vouchers, or exclusive Spring Festival merchandise.
Click the registration link to join
https://www.gate.com/questionnaire/7401
Enter Gate Square daily and click any trading pair or trading card within the content to complete a transaction. The top 10 users by trading volume will win GT, Gate merchandise boxes, position experience vouchers, and more.
The top prize: 50 GT.
![Spring Festival merchandise](https://exampl