Trump Mobile hack plus missing FCC authorization raises security alarms.
Context
What happened: Sen. Maggie Hassan wrote to Trump Mobile CEO Patrick O'Brien, saying the company appears to lack FCC authorization for its international calling service and a required robocall plan.
Key numbers: Hackers stole personal data of 3,615 customers.
Why it matters: Hassan said the missing authorization raises questions about who provides the international services, under what authority, and the company's compliance with national security safeguards. She also cited a breach report and weak customer authentication.