US 12,328,411 B2
System and method for recognizing undesirable calls
Daniil A. Yazovsky, Moscow (RU); Dmitry V. Shvetsov, Moscow (RU); and Vitaly S. Vorobiov, Moscow (RU)
Assigned to AO Kaspersky Lab, Moscow (RU)
Filed by AO Kaspersky Lab, Moscow (RU)
Filed on Jul. 28, 2023, as Appl. No. 18/360,898.
Claims priority of application No. RU2022130176 (RU), filed on Nov. 21, 2022.
Prior Publication US 2024/0171675 A1, May 23, 2024
Int. Cl. H04M 3/42 (2006.01); H04M 3/436 (2006.01)
CPC H04M 3/42059 (2013.01) [H04M 3/436 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for recognizing undesirable calls on a remote device, the method comprising:
generating, for each call, a call identifier from a probabilistic hash received from a secure device, the probabilistic hash having been computed by the secure device based on a unique call identifier associated with call data collected for the call;
analyzing the generated call identifiers to identify at least one of the generated call identifiers as a suspicious call identifier;
requesting data, from the secure device associated with the suspicious call identifiers, where the requested data includes at least information about the call associated with the suspicious call identifier; and
analyzing data received in response to the request and recognizing suspicious call identifier and the call associated with the suspicious call identifier as undesirable based on the analysis of the data received in response to the request.