What is device linking?
Device linking is the graph of which customer accounts have been seen on the same device fingerprint (and sometimes the reverse: which devices a customer has used).
From one fingerprint to linked accounts
Naiza links device fingerprints to customer accounts so investigators can review shared-device clusters. Persist the device and customer identifiers on every event.
How to operate it
Thresholds belong in named rules: three or more customers on one device in a week is REVIEW, not automatically BLOCK. Families and internet cafes exist. List the fingerprint after an analyst confirms a farm.
Naiza’s role
Attach the SDK fingerprint to signup, login, and payout events. Configure account-linking thresholds in named rules and use lists for confirmed abusive devices.
Frequently asked questions
Answers about screening, risk signals, and Naiza integration.
What is device linking in fraud?
It is associating one device identifier with many user accounts so multi-accounting and shared attack tooling become visible.
How should investigators use device links?
Use device links to identify account clusters, then review customer, payment, and event history to distinguish shared household devices from coordinated abuse.
How is it different from fingerprinting?
Fingerprinting creates the identifier. Linking is the many-to-many join to customers over time.