Security guards are hired or contracted to safeguard a range of assets, including property, equipment, staff, and money, against damage, theft, and other illegal or harmful actions. They do this by keeping a high visibility presence on-site and monitoring the area to dissuade and discourage illegal activity. Security guards also monitor alarm systems and surveillance equipment for risks and indicators of criminal activity, and they take action to mitigate harm by confronting and escorting trespassers from the premises.