WATERFORD, N.Y.—MPM Holdings Inc. has reported a "network security incident," saying it is working on resuming normal operations as soon as possible.
The incident, reported March 22, primarily has impacted the company's corporate functions, "preventing access to certain information technology systems and data within the company's network," Momentive said.
No details about the timing of the breach were release.
The company said it took immediate action to address the problem, implementing its business continuity plan. Momentive also is working closely with external cybersecurity experts to restore its affected information technology systems. Manufacturing processes rely on separate networks and have continued to operate "safely, largely without interruption, and in compliance with all environmental regulations," the company said.
Momentive said it had found no evidence that any customer, supplier or employee information was accessed or stolen during the breach.