What is multi-accounting?
Multi-accounting (also called multi-accounting fraud or farmed accounts) is the creation of many user accounts by the same person, household, or device to bypass limits, harvest promotions, or layer payments.
Signals that actually work
Shared device fingerprints, reused IPs, velocity of signups, and recycled emails or payment instruments. A new email on a device already tied to three customers is a REVIEW, not a celebration of growth.
How Naiza applies it
Naiza device intelligence flags devices linked to multiple customer accounts and supports listing a fingerprint. Combine that with velocity on registration events. Confirm the current multi-account threshold in product docs rather than hard-coding a number from marketing copy.
What not to do
Do not BLOCK every family iPad. Use REVIEW, step-up, or limits first. Promo abuse and mule networks look similar until an analyst sees the cluster.
Frequently asked questions
Short answers written so search and answer engines can cite them.
What is multi-accounting in fintech?
It is one actor operating many accounts, usually to farm bonuses, evade KYC limits, or move funds through mule-like structures.
How do you detect multi-accounting?
Attach a stable device id and customer external id to signup and login events, then rule on devices linked to many customers plus signup velocity.
Is multi-accounting the same as account takeover?
No. ATO hijacks an existing account. Multi-accounting creates many accounts. Both use device context, with different event types.