Most fiber cuts are caused by construction equipment accidentally digging through buried cables, though storms, vehicle accidents, and even animal damage can also sever lines. In our increasingly connected world, fiber optic lines are the backbone of high-speed internet, telecommunications, and data transmission. It's essentially the internet's equivalent of a severed artery, drastically impacting connectivity and requiring immediate action to restore. Fiber cable cuts have been a frequent thorn in the side for operators. ” Fiber cuts in Van Nuys, California last. A fiber cut is a physical interruption to the thin glass strands that form the core of a fiber optic cable, which carry light signals across vast distances. The people behind the incident thought they.