RSM US (RSM Defense)
RSM US is the largest US CPA and advisory firm offering a full-scale MSSP practice (RSM Defense) with CMMC Level 2 certification, the largest C3PAO status, and FedRAMP 3PAO authorization.
Company Details
- Headquarters
- Chicago, IL
- Founded
- 1926
- Employees
- 1000+
- SOCs
- 2 (US)
- Response SLA
- 30 minutes
Pricing
- Pricing Model
- Custom
- Starting Price
- Custom quote
About RSM US (RSM Defense)
RSM US LLP is a Top 5 CPA and advisory firm and the US member of RSM International, operating across 120+ countries. Their RSM Defense managed security practice delivers a next-generation NG-XDR platform integrating endpoint, network, cloud, and identity telemetry with AI-enhanced insights and automated remediation. RSM has achieved CMMC Level 2 certification as both an MSP and MSSP for government contractors, holds the largest Certified Third-Party Assessment Organization (C3PAO) status in the industry, and is a FedRAMP-authorized 3PAO. With 19,000+ professionals and deep expertise in PCI DSS, NIST, ISO, HIPAA, HITRUST, FedRAMP, FISMA, NERC CIP, FFIEC, DFARS, and CMMC, RSM Defense is particularly well-positioned for organizations in the Defense Industrial Base and highly regulated sectors requiring both managed security and compliance assurance.
Services Offered
Industries Served
Supported Platforms
Client Company Sizes
Compliance Frameworks Supported
Certifications Held
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