Device Graph
A device graph is a data structure that links devices, identifiers, and accounts by the relationships observed between them. It reveals connections a single-visit view would miss, such as many accounts sharing one device or one person operating across several devices.
How Device Graph works
A device graph models entities, devices, accounts, IPs, emails, payment instruments, as nodes and the observed associations between them as edges. When a device signs into three accounts, or two accounts repeatedly share the same device and network, those co-occurrences become edges that accumulate into a connected picture over time.
Analysts and automated systems traverse the graph to answer questions a per-request view cannot. Is this new account linked to a previously banned device? Do these fifty accounts that look independent actually cluster around a handful of devices? Graph structure exposes rings and shared infrastructure that isolated events keep hidden.
The graph is only as trustworthy as the identifiers that anchor it. Weak or resettable keys fragment the graph and let related entities appear unconnected, while a stable device identifier keeps the links intact even when an attacker rotates IPs or clears cookies. Enrichment such as shared IP ranges or ASN adds context to distinguish coincidental overlap from coordinated behavior.
Why Device Graph matters for fraud prevention
Some of the most damaging fraud is collusive and multi-account by nature: bonus and promo abuse rings, multi-accounting, and organized fraud operate many identities that individually look clean. A device graph surfaces the shared devices and infrastructure that tie those identities together, turning a set of seemingly unrelated accounts into a visible cluster that can be actioned as one. It also protects legitimate users by distinguishing genuine shared-device situations from abuse.
How TRACIO handles it
TRACIO's stable visitor ID is the anchor that makes device-graph analysis reliable, because links persist even when attackers clear cookies or rotate IPs. Combined with IP Intelligence context such as ASN and network type, the identifier lets teams connect accounts to devices and spot clusters of shared infrastructure that indicate coordinated abuse.
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