Top Security Information and Event Management (SIEM) companies in United States - October, 2026

    Listed below are the top companies in US - All States by revenue as of October 2026. With $23B in revenue, Allied Universal is ranked first on the list, followed by Securitas USA with $19.7B in revenue and CSC with $12.3B in revenue. Find additional information about companies in US - All States such as their contact details, employees, location, org chart, news and much more.

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    • CSC
    • Security Information and Event Management (SIEM) , Business Services
    • Northridge, California, United States
    • $12.3B
    • 10K+
    • ADT
    • Security Information and Event Management (SIEM) , Business Services
    • Boca Raton, Florida, United States
    • $5.2B
    • 10K+

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Frequently Asked Questions Regarding Top Security Information and Event Management (SIEM) companies in United States - October, 2026

Is Allied Universal the biggest company in the world?
Allied Universal is the top company in US - All States by revenue, with $23B in revenue
Is Securitas USA the biggest company in the world?
Securitas USA is the second largest company in US - All States by revenue, with $19.7B in revenue
Is Allied Universal the largest company by revenue?
Allied Universal is the largest company by revenue, with $23B in revenue
What is Allied Universal's revenue?
Allied Universal's revenue is $23B
What is Securitas USA's revenue?
Securitas USA's revenue is $19.7B
What is CSC's revenue?
CSC's revenue is $12.3B
See more information about top companies