Fiber optic cables are cut due to a combination of accidental, environmental, animal, and intentional human activities, disrupting internet and telecommunications services.

Accidental Causes

The most common reason for fiber optic cable cuts is construction-related accidents, often referred to as “backhoe fade,” where digging or excavation inadvertently severs buried cables, interrupting service for thousands of users . Vehicle collisions with utility poles, maintenance errors, and storms that damage aerial cables also contribute significantly . Even routine infrastructure work can accidentally damage fiber lines if proper coordination with telecom operators is lacking .

Environmental and Wildlife Factors

Fiber cables are vulnerable to natural forces. Severe weather events such as flooding, ice storms, and strong winds can snap aerial cables or shift the ground enough to break buried lines . Wildlife, including rodents, squirrels, and other animals, may chew through protective sheathing, causing outages, particularly in remote or forested areas .

Intentional Human Interference

Some fiber cuts are deliberate acts of vandalism or theft. Copper thieves sometimes mistakenly target fiber-optic cables, and intentional sabotage has been reported, with operators describing certain incidents as “felony vandalism” or even likening them to domestic terrorism due to the scale of disruption . In conflict zones or politically sensitive areas, undersea cables have also been targeted, potentially as part of strategic campaigns, though many incidents remain unconfirmed .

Consequences

When a fiber optic cable is cut, the light signals carrying data, voice, and video are immediately blocked, causing widespread outages or degraded service . Repairing a cut is time-consuming because each individual fiber strand must be re-spliced, which can take hours or longer depending on terrain and the extent of the damage . In summary, fiber optic cables are cut due to a mix of accidental human activity, environmental stress, animal interference, and intentional acts, all of which can severely disrupt communications infrastructure and require careful repair and preventive measures .