Patent ID: 11870932
Assignee: PINDROP SECURITY, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A system comprising:
a computer comprising a processor and non-transitory storage medium containing executable instructions, and configured to:
obtain call data for a plurality of prior calls associated with a plurality of automatic number identifications (ANIs);
for each ANI of the plurality of ANIs:
extract a plurality of features from one or more prior calls associated with the ANI of the plurality of prior calls;
generate a feature vector for the ANI based upon the plurality features extracted from the one or more prior calls associated with the ANI; and
generate a gateway score for the ANI profile by applying an anomaly detection to the ANI;

obtain a gateway threshold and a contamination factor associated with the gateway threshold; and
identify at least one ANI as at least one gateway based upon the gateway score of the at least one ANI and the gateway threshold.