CCTV systems are widely used for the protection of people, facilities, and assets. These systems feature CCTV cameras that are used in conjunction with other security systems such as security alarms for identifying the security risks and mitigating them to avoid untoward incidents. Internet-protocol based systems are also a type of CCTV systems, and they are extensively used in various industrial and commercial facilities. Externally mounted CCTV cameras and IP- based network surveillance systems are a common sight in various facilities. Although they alert users about the risks, they are also 'vulnerable to bad weather and lightning owing to their delicate construction. However, many organisations ignore the single biggest threat to their systems-voltage surges caused by lightning and electrical switching events. Main power supplies and data communications lines are highly susceptible to surge voltages and the result is usually a total systems failure. Apart from the enormous cost involved in replacing damaged equipment, consider other expenses that are difficult to quantify: severe disruption to your operations - data loss, downtime, loss of fax machine and telephone, inconvenience to your staff and your customers. But the situation can be avoided.