DETERMINING FRAUDULENT USER ACCOUNTS USING CONTACT INFORMATION

摘要

A system can receive sets of contact information from a plurality of devices. Each set of contact information can be associated with a user account of a plurality of user accounts. The system can determine connection information for the plurality of user accounts based on the received sets of contact information. The system can identify a first subset of user accounts is identified as being trusted and a second subset of user accounts is identified as being fraudulent, and subsequently, identify one or more user accounts that are not in the first subset and not in the second subset as being trusted or fraudulent based, at least in part, on the connection information for the plurality of user accounts, and the identified first subset and the identified second subset.

主权项

1. A non-transitory computer-readable medium that stores instructions, which when executed by one or more processors, cause the one or more processors to perform operations that include:
formulating a data representation of a social graph based on information items from a plurality of sources, including from computing devices of individual users in connection with a service provided by a network system, wherein the data representation includes at least a segment that is not human-decipherable, so as to preclude mental determination by humans of at least some user-specific values for one or more types of information items; and making a validation determination for an activity performed by a user associated with a specific user account by (i) identifying a portion of the social graph as relating to the specific user account, and (ii) implementing a contagion operation on at least the identified portion of the social graph.