System and method for fast accurate detection of SMS spam numbers via monitoring grey phone space

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United States of America Patent

PATENT NO 9572004
SERIAL NO

15079577

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Abstract

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A method and system for identifying short message service (SMS) spammers identifies senders as spammers by determining that the senders are sending SMS messages to devices included in a grey phone space. Devices in the grey phone space are identified using various methods including an analysis of call detail records. A grey ratio for a sender is determined as a ratio of messages sent to grey phone numbers by the sender to messages sent to all phone numbers by the sender. A sender is identified based on a difference between the grey ratio for the sender and a second grey ratio being above a threshold.

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Patent Owner(s)

Patent OwnerAddress
AT&T INTELLECTUAL PROPERTY I LP675 W PEACHTREE STREET SUITE 4000 ATLANTA GA 30308

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jiang, Nan Madison, US 202 1512
Jin, Yu Madison, US 55 409
Skudlark, Ann E San Ramon, US 17 77

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