premm.eth

Tonight I paid $15,000 tuition learning why we need privacy in blockchain. After ~6 years working in crypto, I thought of myself as a somewhat a veteran in the space. And yet I just got hit by an address poisoning attack while using the Uniswap wallet. The ironic part? I knew about this attack already. But it was late at night in Korea and I wasn’t 100% focused. Here’s what happened. I moved $15k USDC into my wallet and sent a $1 test transaction first. It went through successfully. A few minutes later I sent the remaining $15k. But attackers had already been sending tiny dust transactions to my wallet from addresses that looked almost identical to the one I was interacting with. In the wallet UI, addresses appear like “0xAAAAA…0000”, so visually they looked the same. My $1 test went to the real address. My $15k went to the poisoned one. Because Ethereum is fully transparent, attackers can monitor wallets and craft these traps. Two takeaways: • Never copy addresses from wallet history • Always verify the full address Even if you know the attack — one moment of low attention is enough. Just another day working in Crypto