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Re:Former telecom manager admits to doing SIM swaps for $1k by toast0 on Friday March 15, 2024 @12:34PM (#39717606)
The telco is in charge of what SIM is mapped to a given number. There's not anything technical the customer can do there; access control is up to the telco.

The telco also needs a process to reclaim the number when you stop paying for it.

Often SIM swaps are done via porting the number to a different telco, and telcos are compelled to do ports in many jurisdictions.

If you're really worried about it, I guess you could look into what it takes to get a number block assigned to you as a competitive telco. That would likely be hard to get transfered out from under you, but the effort may not be worth it.

Also, if the price to get a sim swap is $1k (plus a % of ill gotten gains!), that's high enough to keep out untargetted attacks, IMHO, which isn't a terrible place to be.

Re:Former telecom manager admits to doing SIM swaps for $1k by the-chitmonger on Friday March 15, 2024 @01:11PM (#39718101)
Very informative - thanks for the explanation! I also forget that these attacks are usually very targeted (I guess I just imagine criminals swimming in money despite the old adage). I'll just have to do my best to be an unremarkable person.
Re:Former telecom manager admits to doing SIM swaps for $1k by cqqxo4zV46cp on Saturday March 16, 2024 @06:39AM (#39724726)
I’m sure you’re doing this without trying, much like the vast majority of others.
Re:Former telecom manager admits to doing SIM swaps for $1k by pyuser583 on Friday March 15, 2024 @12:57PM (#39717890)
This is why we have DNS {shudder in disgust}.