Several of the mobile companies referred me to the work of a Mobile Authentication task force created by the carriers last fall.
“ “We’re not providing specific metrics, but it’s been enough that we felt it was important to encourage customers to add extra security features to their accounts.” In a blog post published Tuesday, AT&T said bad guys sometimes use illegal porting to steal your phone number, transfer the number to a device they control and intercept text authentication messages from your bank, credit card issuer or other companies.
T-Mobile suggests adding its port validation feature to all accounts.
To do this, call 611 from your T-Mobile phone or dial 1-800-937-8997 from any phone.
Once in control of the mobile number, thieves can request any second factor that is sent to the newly activated device, such as a one-time code sent via text message or or an automated call that reads the one-time code aloud.
In these cases, the fraudsters can call a customer service specialist at a mobile provider and pose as the target, providing the mark’s static identifiers like name, date of birth, social security number and other information.