Forget terrorist, an accident is more likely including earth quakes, tsunamis and storms and one of the biggest problems is that while building it might just be

Forget terrorist, an accident is more likely including earth quakes, tsunamis and storms and one of the biggest problems is that while building it might just be the easy part maintaining it and decommissioning it when the material fatigue sets in is a much more complicated mess. Depending on the failure you might have a cable with a length greater than the earth’s circumference if we are putting it to a geostationary orbit falling down to earth. For a space elevator to work it’s center of mass needs to be at or above geostationary orbit, depending on the counterweight at the end of the tether it will likely be at least 50,000KM long.