Inherited Tornado Cash exposure via bridge is a primary Arbitrum mixer story when the Ethereum withdrawal and L2 credit link.
Service models on this ledger
Native L2 pooling contracts, when present, need their own typology.
Withdrawal behavior checks
Seven-day withdrawal delay is a bridge feature, not proof of mixing by itself.
What to escalate
Escalate linked Tornado-class inheritance or attributed L2 pools. This information is not legal or financial advice.