On March 6, 2025, CenturyLink Communications, LLC d/b/a Lumen Technologies (“Lumen”) filed a notice of data breach with the Attorney General of Montana after discovering that an unauthorized party was able to access certain files on the company’s computer network. In this notice, Lumen explains that the incident resulted in an unauthorized party being able to access consumers’ sensitive information. Upon completing its investigation, Lumen began sending out data breach notification letters to all individuals whose information was affected by the recent data security incident.
If you received a data breach notification from CenturyLink Communications, LLC, it is essential you understand what is at risk and what you can do about it. A data breach lawyer can help you learn more about how to protect yourself from becoming a victim of fraud or identity theft, as well as discuss your legal options following the Lumen Technologies data breach. For more information, please see our recent piece on the topic here.
What Caused the Lumen Technologies Data Breach?
The Lumen Technologies data breach was only recently announced, and more information is expected in the near future. However, Lumen’s filing with the Attorney General of Montana provides some important information on what led up to the breach. According to this source, on January 17, 2025, Lumen learned about a potential data security incident impacting its IT network. In response, Lumen secured its network and then launched an investigation to learn more about what happened and whether any confidential information may have been affected.
Through this investigation, Lumen learned that an unauthorized party was able to access its computer network between November 15, 2024 and December 4, 2024, including files containing confidential consumer information.
After learning that sensitive consumer data was accessible to an unauthorized party, Lumen Technologies reviewed the compromised files to determine what information was leaked and which consumers were impacted. Lumen recently completed this process. While the publicly available data breach letter on the Montana Attorney General’s website does not mention the specific type of information that was leaked, on March 6, 2025, Lumen Technologies sent out personalized data breach letters to anyone who was affected by the recent incident. These letters should provide victims with a list of what information belonging to them was compromised.
More Information About CenturyLink Communications, LLC
Lumen Technologies, formerly known as CenturyLink Communications, LLC, is a global telecommunications and technology company providing network, security, cloud, and communication solutions to businesses, government agencies, and consumers. Headquartered in Monroe, Louisiana, the company delivers fiber-optic and high-speed internet services, enterprise IT solutions, and edge computing infrastructure to support digital transformation. The organization employs approximately 28,000 people and generates an estimated $17 billion in annual revenue.
