MSS Security
MSS Security is a leading security and emergency response company in Australia, employing over 6,000 staff and holding a significant market share. With a national infrastructure that includes offices in all state and territory capitals, as well as regional areas, MSS Security serves a diverse range of industries across the country. Founded in 1896 and evolving through various ownerships, MSS Security is now part of SIS Limited, a major player in the Asia-Pacific security sector. The company offers a wide array of services, including manned guarding, emergency response, security consulting, and technology-enabled solutions. MSS Security also provides accredited training programs to ensure high service standards and career development for its employees. MSS Security operates in multiple market segments, such as aviation, education, healthcare, and government, demonstrating its capability to meet various security needs. The company prioritizes customer service and employee training, guided by core values of integrity, teamwork, and performance.
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Headcount trend
MSS Security went from 926 employees in Jul 2023 to 972 in Jun 2025. Jan to Jun 2025: 51 people joined, 27 left.
Headcount data through Jun 2025
Org structure
Headcount by department
Peer reviews
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MSS Security FAQ
How many employees does MSS Security have?
MSS Security has about 972 employees, up 1.3% over the 3 months to Jun 2025.
What is MSS Security's revenue per employee?
MSS Security makes about $442K in revenue per employee, based on $430M annual revenue and 972 employees.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.