Lumen Hit By Separate Ransomware, Malware Attacks

June 27, 2023


Multibillion-dollar telecommunications firm Lumen Technologies told regulators Monday that it had discovered two cybersecurity incidents, including a ransomware attack that crippled some of its systems, that degraded services for some of its enterprise customers.

Lumen said that it caught the ransomware attack when a “malicious intruder” inserted malware “into a limited number of the Company’s servers that support a segmented hosting service.” The company did not immediately respond to questions about the type of ransomware involved, the scope of the attack, or whether they have attributed it to a specific group. The company said that the incident “is currently degrading the operations of a small number of the Company’s enterprise customers.”

Additionally, the company said that it discovered a separate incident involving an intruder accessing and installing malware on “internal information technology systems,” allowing the cybercriminal to steal “a relatively limited amount of data.”

Incident Date

March 27, 2023

Estimated Cost

No cost values disclosed.

Type of Malware

No Malware identified

Threat Source

No threat source identified