SIM swap attacks allow hackers to steal someone's phone number and break into any online account connected to that number, usually by tricking a carrier's customer support.
The good news is it's easy to lock down your phone number and takes just a minute or two.
By me, at TechCrunch: https://techcrunch.com/2025/07/09/how-to-protect-your-cell-phone-number-from-sim-swap-attacks/