(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...

SIM swapping is a popular type of fraud in which someone transfers your mobile number to a SIM in their own device. By intercepting any messages or phone calls sent to you, they're able to access your ...

Forbes contributors publish independent expert analyses and insights. Zak Doffman writes about security, surveillance and privacy. This is not as easy as it sounds — and it’s not common advice. But ...

AT&T is rolling out a protection that prevents unauthorized changes to mobile accounts as the carrier attempts to fight a costly form of account hijacking that occurs when a scammer swaps out the SIM ...