The provider says it has reset the passcodes of the current account holders whose data was compromised as it investigates the leak, the latest in a string of telecommunications company data breaches.

Delta Air Lines says it has upgraded its entire fleet to protect the planes against radio interference from wireless signals. The airline said Thursday that it completed upgrading about 190 planes over the summer.

Unable to compete successfully with Facebook and Google for digital advertising, Verizon signals a return to its roots as a telecommunications company.