Ballistic protection is a technique to protect the armed forces, homeland security and law enforcement officers, and private security officials, and their vehicles from various materials such as bullets, explosive materials, falling glass materials, mortar shrapnel, and mines. They are also used to protect personnel from electric and heat, chemical, bio, and physical hazards. Growing violence and an increase in the number of terrorist threats and attacks has elevated demand for ballistic protection equipment.

Perimeter security includes mechanical and electronic systems that protect the external perimeter of a facility. The increase in number of criminal attacks is leading to damage of property and loss of human lives. Intrusion into any critical infrastructure may lead to disruptions in operation. Perimeter security systems were introduced because of the increase in the number of criminal attacks on critical infrastructures. The components of perimeter security systems include barriers and gates, sensors, warning devices, personal identification systems, and control and communication systems. The effectiveness of a perimeter security system can be measured by how successful it is in identifying and deterring different threats

Public safety and security is critical for a country's prosperity. One of the important aspects of public safety is mission-critical broadband communication. This can be achieved by using LTE, which is a transformation technology. Public safety LTE provides next-generation wireless broadband technology in mission-critical field applications, equipping people with the best realtime data, video, voice, and other forms of tactical communication. Private LTE devices have the ability to provide a dedicated spectrum for public safety so that users can safely access broadband applications and rich media services.

In general, the terms 'small arms' and 'light weapons' are used for small and lightweight weapons that can be operated by one person. They usually include revolvers, pistols, rifles, submachine guns, light machine guns, heavy machine guns, grenade launchers, portable anti-aircraft guns, portable anti-tank guns, and mortars.

Utility infrastructure is a major part of critical infrastructures. The number of critical infrastructures is likely to grow during the forecast period in various geographical regions. These include oil and gas manufacturing sites, water distribution and sanitation sites, nuclear facilities, and energy maintenance sites, which are high-value construction projects. The security of these high-value projects is important. Also, the increased risk of cybersecurity is expected to dominate the existing physical security risks. Because of increased criminal activities over a network, countries are imposing strict regulations to secure critical infrastructures.

Lawful interception refers to legally authorized surveillance of data and voice communications. It is an important tool for law enforcement agencies worldwide for investigating and litigating criminal activities. Lawful interception is applicable for all networks delivering voice, data, and internet services. It simplifies the investigation process by collecting evidence for better inspection. Today, it is mandatory for network operators to provide lawful intercepted enabled communication networks and adopt legislative regulations set by governments.