Ethereum $ETH is facing a new wave of address poisoning scams, with incidents surging after the network’s Fusaka upgrade lowered transaction fees and improved efficiency across the blockchain. The upgrade successfully reduced costs for users, but it also made it cheaper for attackers to send thousands of tiny “dust” transactions designed to manipulate wallet histories.

Address poisoning works by sending small amounts of crypto from fake wallet addresses that closely resemble legitimate ones. These look-alike addresses appear in a user’s transaction history, and if someone later copies the wrong address when making a transfer, funds can be sent directly to the attacker with no way to reverse the transaction.

Security researchers warn that the lower fees introduced by the Fusaka upgrade have significantly increased the scale of these attacks, with millions of poisoning attempts targeting users across the Ethereum network. The situation highlights the importance of verifying full wallet addresses before sending funds, as even a small copy-paste mistake can lead to irreversible losses.