PGPP (Pretty Good Phone Privacy) Beta Launch

Re:PGPP (Pretty Good Phone Privacy) Beta Launch by sneak on Thursday August 11, 2022 @03:34PM (#32430665)

> IMEIs can be queried by a network core (not the tower) and US carriers probably do this every once in a while to check against their stolen phone database. It can be changed on some devices but not others. It's not inherently tied to you as a person but of course it is tied to that device.

It's also linked to the rotating IMSI, so all of the rotating IMSIs that are used at the times the IMEI is interrogated are linked together from a metadata standpoint.

They're also all linked to every other IMSI that was ever used with that IMEI (at the times the IMEI is interrogated).

> US carriers probably do this every once in a while to check against their stolen phone database

Hourly? Daily? Monthly? Only on first-time seeing a new IMSI?

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Re:PGPP (Pretty Good Phone Privacy) Beta Launch by throwaway67743 on Sunday August 14, 2022 @03:19PM (#32462076)

Carriers globally check at registration time to deny stolen phones access (via various shared databases) etc, this has been the case for a long time and someone selling mobile services should know this.

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Re:PGPP (Pretty Good Phone Privacy) Beta Launch by biktor_gj on Thursday August 11, 2022 @05:02PM (#32431676)

Probably on every connect, there are ways to randomize your IMEI on every boot on certain phones though (that might be not very legal in some countries)

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