Ethereum's daily active addresses surpassed 1.3 million in January 2026, following the Fuelsaga upgrade that reduced transaction fees. This increase outpaced major Layer-2 networks like Arbitrum and Base. However, security researcher Andrey Sergeenkov highlighted that approximately two-thirds of this activity is linked to 'address poisoning' attacks. These attacks involve sending small amounts of stablecoins to numerous wallets, leading users to mistakenly use similar addresses for transactions, resulting in at least $740,000 in confirmed losses.