Crypto User Offers $1M Bounty Amid $3.4 Billion Theft; Address Masking Blamed for Errors
December 20, 2025
Design choices in wallet interfaces, including masking and truncating addresses, coupled with the common habit of copying addresses from transaction histories without full verification, contributed to the error.
The case highlights how abbreviated addresses and masked middle characters can mislead users and lead to incorrect transfers.
With many wallets masking the middle of addresses, users often rely on visible start and end characters and can accidentally copy the wrong address from history.
The victim offered a $1 million white-hat bounty and signaled ongoing recovery efforts and potential legal actions.
In parallel, the victim published an on-chain message demanding return of 98% of the funds within 48 hours and threatening escalation if restitution is not made.
Disclaimers emphasize that this is not investment advice.
Blockchain transactions are irreversible once confirmed, leaving little chance to stop large transfers after finality.
Crypto hacks totaled $3.4 billion in 2025, with three incidents making up 69% of losses; the Bybit breach alone accounted for $1.4 billion, illustrating the concentration of losses in a few major breaches.
Experts recommend manually checking full addresses before transfers, using address books or whitelists, and avoiding large single transfers.
The attacker quickly moved funds across wallets, converting some USDT to ETH and using tools like Tornado Cash to obscure the trail, hindering recovery.
Stolen funds were swapped for Ether and shuffled through multiple wallets, with several addresses interacting with Tornado Cash to mask the flow.
Tornado Cash-era laundering significantly reduced the chances of recovering the stolen funds.
Summary based on 5 sources
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Sources

CoinDesk • Dec 20, 2025
Victim offers $1 million bounty, legal threat after $50 million crypto theft
Cointelegraph • Dec 20, 2025
How a single copy-paste mistake cost a user $50M in USDt
BeInCrypto • Dec 20, 2025
Crypto Trader Suffers $50 million Loss Following Address Poisoning Attack
Live Bitcoin News • Dec 20, 2025
He Tested the Transfer. Everything Looked Right. Then $50,000,000 Vanished.