Mobile Network Hack Reveals Sensitive Cellphone Data

The Register: Researchers demo structural cracks in GSM carrier networks that make it easy track any GSM-enabled handset and to find the number of most US-based mobile users.

"The information disclosure hack works by tricking the GSM caller ID system into assembling what amounts to a white pages directory of virtually every cellphone number. To do that, DePetrillo and Bailey set up a voice over IP account that included caller ID. They then called the account over and over using huge blocks of spoofed numbers and logged the caller ID output of each one using an Asterisk server."

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