Security experts offer their tips for receiving, detecting, legitimizing and acting upon a bomb threat before the police and bomb squad arrive. Every building, plant and facility should have a checklist of questions and observations in place. The culprits often turn out to be disgruntled employees, unsatisfied customers, a jilted boyfriend or girlfriend, pranksters or students looking to skip school. Serious bombers today rarely call in threats before detonating a device, experts say. Security expert: “Most bomb threats are hoaxes. We have to take every threat seriously””]
Source: https://www.csoonline.com/article/2122154/how-to-handle-a-bomb-threat.html