Headquartered in Monroe, Louisiana, Lumen offers an enterprise technology platform that combines networking, cloud, security, and collaboration services.

In a Form 8-K filing with the US Securities and Exchange Commission (SEC) this week, the company revealed that intruders deployed malware on its systems in two separate incidents.

The first of them was a ransomware attack in which “a limited number of the company’s servers that support a segmented hosting service” were infected.

Following the incident, a small number of Lumen’s enterprise customers are seeing degraded operations, the company says.