[liprais]

this method will only work with GSM network because 1.GSM networks doesn't verify BTS 2.GSM encrypt keys are cracked and all over the internet. Users of other kind of networks should not worry about this kind of hack. Actually here in China a fake BTS a.k.a 伪基站 can be easily purchased online.

[privong]

> Users of other kind of networks should not worry about this kind of hack.

The article is not about a hack. The article is about how the cell company or state-level actor can leverage the connectivity information that is required for any modern cell service to operate.

[rsync]

"this method will only work with GSM network because ..."

Yes, that's true - but remember that all of our 3G/4G phones are also 2G phones and that if you disable/jam/overpower the 3G/4G signals the phone will very happily revert down to 2G, possibly with no encryption, and possibly in a way that you have to be very careful to even notice.

There are quite a few attacks that are mitigated by 3G/4G in theory, but in practice you're still vulnerable to because your phone can be downgraded to 2G by an outside actor.

[girvo]

Interestingly, the 2G networks are being (or have? I can't remember which) shut down entirely here in Australia.

[user5994461]

It works on all generations: 2G 3G 3.5G 4G LTE.