In FOSA’s comment, Executive Director, Mark Uncapher wrote: “Distributed fibre optic sensing solutions can be used to detect perimeter intrusions. These may include security solutions performing continuous monitoring and analysis of cables, pathways, and points of vulnerability such as fence lines, barriers, roadways, campus perimeters, manholes and equipment cabinets. The technology helps with the timely identification of intrusions that are often precursors to a physical attack or damage that could degrade network performance or availability.”