Method and apparatus for filtering short message system spam

Details Method and apparatus for filtering short message system spam Method and apparatus for filtering short message system spam

2007-03-16

2010-06-01

Corsaro, Nick (Department: 2617)

Telecommunications

Radiotelephone system

Auxiliary data signaling

C455S412100, C455S412200, C455S414100, C369S029010, C369S029020

Reexamination Certificate

active

07729710

ABSTRACT:
A method for filtering spam directed at mobile phones in a short message system (SMS). A short message includes message content, and both a mobile phone number and a first authentication code of a destination mobile phone. A second authentication code of the destination mobile phone is stored in a memory. The short message is received and the first authentication code and the second authentication code are extracted from the short message and the memory, respectively. If it is ascertained that the extracted first authentication code does not match the extracted second authentication code, then the short message is determined to be SMS spam and is prevented from being subsequently received by the destination mobile phone. Otherwise the short message is determined to not be SMS spam and is not prevented from being subsequently received by the destination mobile phone. An authentication apparatus within the SMS performs the method.

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