Tailgating is one of the most common and unwitting physical security breaches in workplaces. For most people, holding a door open for a colleague, a uniformed delivery man carrying multiple packages, or a visitor without a badge is considered polite and common courtesy. In contrast, closing the door on the person behind you or asking for someone’s credentials before letting them in could come across as rude. But the blind trust and kindness that we often defer to can increase the risk of unauthorized entry, leaving your companies vulnerable to potential loss and damages.