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A comment on LTrack: Stealthy Tracking of Mobile Phones in LTE.

Re:LTrack: Stealthy Tracking of Mobile Phones in LTE by teleforce on Tuesday March 22, 2022 @01:09AM (#30762918)
These of attacks do not works against 5G, from the Countermeasures (Section 8), "In 5G, IMSI catching is no longer possible since IMSI is encrypted using the network’s public key. Thus, the attacker cannot decode the IMSI."
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Re:LTrack: Stealthy Tracking of Mobile Phones in LTE by red0point on Tuesday March 22, 2022 @03:19AM (#30763468)
They still do, since in 5G you can capture a SUCI, replace it on a later connection attempt, and observe if the phone can still attach. See [1], section 5.2.3, and it‘s implemented in [2].

Finally, localization attacks could potentially still work as well.

[1] https://arxiv.org/pdf/1806.10360.pdf [2] https://dl.acm.org/doi/10.1145/3448300.3467826

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