Bitcoin transaction-censorship vulnerability disclosed
A transaction-relay attack is disclosed that can prevent a connected wallet's transaction from propagating and can endanger time-sensitive Lightning claims.
On December 6, 2024, Bitcoin transaction-censorship vulnerability disclosed. A transaction-relay attack is disclosed that can prevent a connected wallet's transaction from propagating and can endanger time-sensitive Lightning claims.
The disclosed attack exploited relay limits to keep a victim's transaction from propagating. In a Lightning context, suppressing a time-sensitive justice or settlement transaction can turn a networking weakness into potential loss of funds.
The event preserves a concrete part of Bitcoin's security history and the operational assumptions users, wallet developers, exchanges or node operators had to manage at the time.