Imagine sending money in $BTC , $ETC or $USDT to an address you copied correctly, confirming the transfer, and discovering that the funds ended up in a criminal's wallet.
You didn't necessarily make a mistake when copying. It's possible that malware changed the address before you pasted it...
This threat is known as CLIPPER MALWARE, a type of malware capable of monitoring and manipulating the clipboard on an infected device.
And we're not talking about a theory....