T-Mobile severs fiber link after Salt Typhoon breach discovery

T-Mobile US Inc. physically severed fiber optic connections at multiple facilities after detecting an intrusion allegedly linked to the Salt Typhoon hacking group. The drastic containment measure followed an internal investigation triggered by broader revelations regarding Chinese state-sponsored cyber espionage targeting telecommunications providers. Company executives stated the physical disconnection was necessary to prevent lateral movement within critical network infrastructure while forensic analysis continues. T-Mobile has not disclosed the specific extent of data exfiltration or customer impact resulting from the alleged breach. Industry experts note that physically cutting cables represents an extreme defensive tactic rarely deployed outside active military conflict zones. The incident highlights escalating tensions between Western telecom operators and sophisticated threat actors utilizing advanced tools for persistent access. Federal agencies are currently coordinating with T-Mobile to assess national security implications of the alleged compromise. The company maintains its core services remain operational despite the targeted infrastructure isolation.