Patent ID: 9572004
Date: 2017-02-14
CPC Classifications: H04L,H04W

Claim:
1. A method comprising: comparing, by a system including a processor, electronic records associated with an originating number of a short messaging service text message to entries in an electronic list of grey phone numbers, each grey phone number in the electronic list of grey phone numbers associated with a device lacking a capability to receive short messaging service text messages; determining, by the system, a match between the electronic records and a grey phone number in the electronic list of grey phone numbers; determining, by the system in response to the match, that the originating number has previously sent a previous text message to the grey phone number known to lack the capability to receive the short messaging service text messages; and identifying, by the system, the originating number as a spammer based on the previous text message previously sent to the grey phone number known to lack the capability to receive the short messaging service text messages.