A data breach affecting 15,661 Ericsson Inc. (US) employees & customers has been disclosed after attackers compromised a third-party service provider used by the company. News posted on 10th Mar 2026. The incident involved unauthorised access to files containing personal information, according to breach notifications filed with US state authorities.
The breach was reportedly detected on April 28, 2025, when the service provider identified suspicious activity on its systems. The Ericsson Inc. launched an investigation with the assistance of external cybersecurity specialists and also notified the FBI. A detailed review was completed on Feb 23, 2026, confirming the breach.
Ericsson Inc. is the US subsidiary of Swedish Telefonaktiebolaget LM Ericsson. The Stockholm-headquartered company employs nearly 90,000 people globally.