Mobileum Data Breach Exposes Social Security Numbers

Mobileum Inc., a telecommunications technology company headquartered in Cupertino, California, disclosed a data breach that it discovered on Aug. 22, 2026.

The company provides analytics and software solutions for mobile network roaming, security, fraud and risk management, network testing, revenue assurance and customer intelligence.

The breach was disclosed to the Massachusetts Office of Consumer Affairs and Business Regulation on Oct. 9, 2026, identifying 45 Massachusetts residents as affected.

The breach resulted in the exposure of personal information, including full names and Social Security numbers. At this time, the key details surrounding the incident remain undisclosed.

The company's notice to affected individuals acknowledged that exposed personal information could potentially be used to file a false tax return, open accounts in a person's name or commit other forms of fraud or crimes.

Mobileum's response to the breach

The company is offering complimentary credit monitoring and identity monitoring services through Kroll, a risk solutions company. To activate these services, affected individuals can visit Kroll's enrollment page and enter the unique membership number included in their notification letter. The letter also includes a deadline by which individuals must enroll to take advantage of the complimentary services.

The company recommended affected individuals to obtain their credit reports and review them carefully for any discrepancies. Mobileum advised consumers to look for accounts they did not open or inquiries from creditors they did not authorize.