A user on the Ethereum network lost approximately 999,999 USDT after signing a phishing token authorization, according to Scam Sniffer. The attacker initially attempted to withdraw $1 million, exceeding the wallet balance by $631, which failed. However, 36 seconds later, they recalculated and successfully withdrew the entire remaining balance. Scam Sniffer advises users to carefully verify all signature requests and avoid hastily signing transactions.