Deloitte ranked No. 1 in Security Services by revenue in the 2025 Gartner® Market Share: Security Services, Worldwide, 2024 report

NEW YORK, NY, USA, June 2025 - For the second consecutive year, Deloitte has been ranked No. 1 by revenue for 12 years in Gartner’s previous Market Share: Security Services, Worldwide, 2024 report. Deloitte’s recognition coincides with a 17% year-over-year growth rate. We feel this reflects a strong performance trajectory. Deloitte has a 12-year streak of being ranked No. 1 by revenue in Gartner’s previous Market Share: Security Consulting Services, Worldwide reports from 2011 through 2022, which was discontinued after 2022.

"We feel this recognition is a testament to Deloitte ’s leadership in the industry, empowering organizations as they navigate an increasingly complex business environment fueled by AI and digital transformation,” said Emily Mossburg, Deloitte Global Cyber Leader. “Cyber is shaping enterprise strategy—driving innovation, guiding investments, and influencing how leaders position their businesses for the future.”

According to the Gartner Security Services 2024 market share report, “the worldwide security services revenue grew by 9.9% to $77.1 billion in 2024 from $70.2 billion in 2023." As noted in the report, Deloitte has the largest market share with 16.6% of the Security Services market globally in 2024.

“Today’s clients are facing deeply complex challenges and fundamentally reinventing how they operate and grow,” said Heather Stockton, Deloitte Global Consulting Services, Technology & Transformation Leader. “We believe our no. 1 ranking in the Gartner report reflects the strength of Deloitte’s multidisciplinary approach, which allows us to bring broad capabilities to design with cyber in mind where cyber is embedded across business, technology, and risk to drive transformative value across the enterprise.”

Notable highlights of Deloitte’s Cyber investments from the past year include:

• Development of advanced AI capabilities to help safeguard client operations and adopt AI technologies guided by our Cybersecurity for AI and GenAI framework.
• Expansion of Managed Extended Detection and Response (MXDR) by Deloitte capabilities by integrating Palo Alto Networks Cortex XSIAM platform for AI-driven SOC (Security Operations Center) transformation.
• Continued investment across our portfolio—including Digital Identity by Deloitte, Cyber Incident Readiness, Response, and Recovery (CIR3), and attack surface management—to help clients reduce complexity and drive stronger security outcomes.
• Publication of Deloitte’s 4th Edition of the Global Future of Cyber Survey, which includes responses from nearly 1,200 global C-suite executives and their direct reports, with data gathered across 43 countries and six industries.

With more than 40,000 security services professionals worldwide, Deloitte advises, implements, and operates a full range of services and solutions with capabilities across strategy & transformation, defense & resilience, enterprise security, and digital trust & privacy. Visit www.deloitte.com/cyber for more information.

For more about Deloitte Analyst Relations, please visit our Analyst Recognitions page.