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>>Ethereum address poisoning scams surge after the Fusaka upgrade, revealing a major vulnerability.

Ethereum address poisoning scams surge after the Fusaka upgrade, revealing a major vulnerability.

crypthub

2 days ago

Surge After Fusaka Upgrade

The Fusaka upgrade in December 2025 cut Ethereum gas fees by about 67%, unintentionally lowering the cost of dust attacks. This reduction allowed scammers to launch address‑poisoning campaigns at scale, turning a rare nuisance into a widespread threat. Analysts now report a sharp rise in scams and millions of dollars in losses within weeks of the upgrade.

How Address Poisoning Works

Attackers create fake addresses that share the first and last characters of a target’s legitimate address and send tiny “dust” payments to them. The dust appears in the victim’s transaction history, making the fraudulent address seem familiar. When users later copy‑paste an address from that history, they may inadvertently send funds to the poisoned address, resulting in irreversible loss.

Economic Impact and Victims

Lower transaction costs enable scammers to target thousands of addresses simultaneously, turning dust attacks into a profitable business model. Chainalysis estimates roughly $47 million in losses in the first quarter after Fusaka went live, affecting retail investors, DeFi participants, and some institutions. Users who rely on copy‑paste shortcuts are especially vulnerable to this psychological trick.

Mitigation and Outlook

Wallet providers are adding visual warnings and similarity checks to flag potentially poisoned addresses. Transaction monitors now alert users to unexpected dust deposits, while education campaigns stress full‑address verification. Future proposals include stronger checksum validation and reputation‑based address filters, aiming to preserve Fusaka’s efficiency without compromising security.