"The Dusting Attacker"

This character attacks not by taking money, but by giving it. They send very small amounts of coins (like 0.000005 BTC) to thousands of random wallets. The goal? If the wallet owner is unaware and combines this coin "dust" with their main coins in a transaction, the attacker can track the transaction trail to unravel the owner's anonymity. For them, your privacy is a target to be destroyed with small change.