Money laundering is the process of hiding the criminal origin of funds so they can be moved, spent, or reinvested with less risk of detection. Cybercrime often generates value through fraud, stolen accounts, ransomware payments, or illicit marketplaces, and laundering is the step that turns that value into usable money.
In cyber security, laundering matters because it connects technical compromise to financial harm. Attackers may route proceeds through mule accounts, cryptocurrency exchanges, payment processors, gift cards, shell companies, or layered transfers to obscure where the money came from. Defenders look for patterns such as rapid cash-out, account takeover followed by unusual transfers, mismatched identity data, and repeated use of the same infrastructure across transactions. Strong identity verification, transaction monitoring, sanctions screening, and anomaly detection help disrupt these flows. In practice, laundering is often the final stage that allows a cyberattack to become profitable at scale.