S3AFRICA is a South African registered closed corporation dedicated to providing a full range of specialist security and related services to standards that meet or exceed industry best practice. Its core business is focused on managing the risks associated with personal, asset and infra structure protection.

SABTELCOM Sarl Cameroon aims to give customers the best service for their investment and expectations. They offer services in telecommunication systems, digital & IP based security systems, P.A.T testing (Portable Appliance Testing and Certification), data structured cabling and certification solutions, CCTV installation and maintenance systems, fibre optic cabling, wireless installations, moves & changes, and new installations.

Saint Mondiale Group Pte Ltd. is incorporated in Singapore and has supporting offices that follow the sun. MONDIALE provide clients with proven value added solutions.

SandBox Technologies is a safety/security and Technology Company which offers Solutions to individuals, organisations and corporate companies. SandBox Technologies is Registered with the Corporate Affairs Commission, Abuja Nigeria with Registration Number 2457635 under the Companies and Allied Matters ACT 1990(pursuant to Section 659)

SavySec Security Services supply professional, highly trained SIA licensed security personnel to clients around London and the ‘home counties’ surrounding areas. Their staff are from a range of highly physical professional backgrounds, such as personal training, Rugby Union, the emergency services and the British military.

Seagull International Security delivers outstanding service to their clients. They believe in professional excellence and ultimate cost-benefit work.

Secure Protect Security Solutions offers residential, retail, commercial, industrial and corporate security solutions.

SecureBI is a business and strategic advisory firm with deep roots in and exclusively serving the physical security industry. The company offers strategy, marketing and go-to-market consulting and advisory services for businesses, investors and individuals seeking growth or entry into security.

Securicon provides expert consulting for application, system and network security. Securicon's services include application security evaluations, source code analysis, secure application development training, penetration and vulnerability assessments, security architecture consulting, creation of security plans and policies, as well as compliance audits and consulting.

Securisks offers personal consultation and customised solutions for security, legal, and human resource challenges. Their services include workplace violence prevention and active shooter training, workplace investigations, threat assessments, employment law and human resource consulting.

Based in Bahrain, Security 1, a division of Ebrahim K. Kanoo Group, is a security-focused company that provides turnkey solutions in the areas of access control, fire alarm, fire suppression, video surveillance, intrusion detection, and building and home automation requirements for all governmental, commercial, industrial and residential projects.

Security Associates International (SAI) is dedicated to providing clients with the very best in security protection. It offers a wide range of security, investigative and training services. SAI's concept is to provide clients with all their security needs; from uniformed security personnel, mobile security patrols, CCTV sales and installation and card access/alarm systems to certified training programmes.

The Security Consulting Alliance LLC (SCA) is a consulting firm catering to corporate security, law enforcement, and the military. The company also offers cybersecurity consulting and covers threat assessments, security policy development, breach prevention, security audits, and employee awareness training.

SecurityForceUSA.com is a free, plain-language guide to U.S. security guard licensing and training requirements. Explore state-by-state rules, eligibility, background checks/fingerprinting, renewal info, and career resources—plus links to official regulators and forms to help users stay compliant and get licensed faster.

SIAG Provide all aspects of manned guarding including close protection officers for hostile and non-hostile environments. All of the company's senior management team are former HM Forces or British police. The company also provides accredited training courses.

The Security Industry Institute (SII) was set up in September 2007 to offer nationally recognised and comprehensive professional security training and quality job placements for security personnel. SII aims to enhance the security industry’s professional and operating standards and employability of the workforce through various skills upgrading initiatives.

Security Information Systems, Inc. (SIS) is a leader in high performance software systems for the security industry. With over 3000 installations world-wide (in over 100 countries), the ALARM CENTER® software series has set the standard for reliability and excellence in central station automation & security management software.

SecurityCEU.com, owned and operated by The CMOOR Group, is the one-stop shop for continuing education and certification training.

Secutech provides unique security solutions, including hardware,software, men guards and security services.

Secutel Technologies specialises in visual verification-based intrusion detection and physical security solutions. The company also covers security workforce management, access control, and facial recognition.

Kuwait-based systems integrator for large and small security projects, control rooms, gates and entrance security.

SEGA IT Solutions provides the full spectrum IT services. They are IT managers with proven expertise in hardware supply/installation, software procurement and installation, upgrades and configuration. SEGA IT Solutions' core competencies lie in IT services delivery, surveillance camera installation, desktop service maintenance, Local Area Network design and implementation using copper and fibre optics cables & wide area network design.

Selous Security are a SIA training provider for door supervisor, security guarding and physical intervention.

SensLynx is a 360-degree provider of wireless IoT/M2M connectivity and fleet & asset management solutions. The company’s product line includes Fleet Tracking devices, IoT Peplink and Cradlepoint routers. SensLynx develops technologies built from the ground up with input from resellers and end users alike.

Serco Group plc is headquatered in Hampshire, United Kingdom. The company caters to markets in IT & BPO outsourcing, local government, home affairs, defence, science, nuclear, health, education, welfare to work and to the private sector.