A laundering network is a coordinated set of people, accounts, companies, and payment channels used to disguise the origin of criminal proceeds. Instead of moving stolen money directly to one endpoint, the network spreads transfers across multiple intermediaries, layers, and jurisdictions so the funds look like ordinary commerce or personal payments.
This matters in cyber security because stolen data, ransomware payments, fraud gains, and account takeovers often only become profitable when attackers can cash out. Laundering networks help criminals break traceability, slow investigations, and evade bank controls. Defenders look for warning signs such as rapid pass-through transfers, many small deposits into related accounts, cross-border routing, mismatched account activity, and patterns that suggest structured forwarding. Banks, payment platforms, and incident responders use transaction monitoring and identity checks to detect these networks before illicit funds disappear into the wider financial system.