EDR Solutions for CMMC Compliance

Basic antivirus is no longer enough to protect systems handling Controlled Unclassified Information. CMMC Level 2 requires capabilities that traditional antivirus cannot provide—real-time threat detection, behavioral analysis, and incident response support. Endpoint Detection and Response (EDR) solutions fill this gap.

EDR stands for Endpoint Detection and Response—advanced security software that continuously monitors endpoints for threats, detects suspicious behavior, and enables rapid response to security incidents.

CUI stands for Controlled Unclassified Information—sensitive government data requiring protection but not classified as secret.

This guide explains how EDR supports CMMC compliance and helps you choose the right solution for your organization.

Why Antivirus Is Not Enough

Traditional antivirus software relies on signature-based detection. It compares files against a database of known malware. If a file matches a known threat, it blocks it. If not, the file runs.

This approach fails against:

Zero-Day Attacks

New malware has no known signature. Traditional antivirus software cannot detect threats it has never seen before.

Fileless Malware

Modern attacks often run entirely in memory without writing files to disk. Signature-based scanning misses these threats completely.

Living-Off-the-Land Attacks

Attackers use legitimate system tools (PowerShell, WMI, command prompt) to conduct attacks. Antivirus typically ignores these trusted tools.

Advanced Persistent Threats

Nation-state and sophisticated criminal attackers specifically design their malware to evade antivirus detection.

How EDR Differs from Antivirus

EDR provides capabilities beyond traditional antivirus:

Behavioral Detection

Instead of just scanning files, EDR watches how programs behave. If a process starts encrypting files rapidly, connects to suspicious servers, or injects code into other programs, EDR detects the malicious behavior regardless of whether the file matches a known signature.

Continuous Monitoring

EDR agents constantly monitor endpoint activity—process execution, network connections, file changes, registry modifications. This creates visibility into what is happening on your systems at all times.

Threat Hunting

EDR platforms allow security teams to proactively search for threats across all endpoints. You can ask questions like “Which systems ran PowerShell with encoded commands in the past week?” and get immediate answers.

Incident Response

When threats are detected, EDR enables rapid response. You can isolate infected systems from the network, kill malicious processes, and collect forensic data—all remotely through a central console.

Historical Analysis

EDR retains activity data, allowing you to investigate incidents that occurred in the past. If you discover a breach, you can look back to understand how attackers got in and what they accessed.

CMMC Requirements EDR Addresses

EDR directly supports multiple CMMC Level 2 requirements:

System and Information Integrity

SI.L2-3.14.1: Flaw Remediation – EDR platforms often include vulnerability information, helping identify systems needing patches.

SI.L2-3.14.2: Malicious Code Protection – EDR provides advanced malware detection beyond basic antivirus signatures.

SI.L2-3.14.4: Update Malicious Code Protection – EDR platforms update continuously with new threat intelligence.

SI.L2-3.14.5: System and File Scanning – EDR continuously monitors system and file activity for threats.

SI.L2-3.14.6: Monitor Communications for Attacks – EDR monitors network communications from endpoints for malicious activity.

SI.L2-3.14.7: Identify Unauthorized Use – EDR behavioral analysis identifies unusual and unauthorized system use.

Audit and Accountability

AU.L2-3.3.1: System Auditing – EDR creates detailed logs of endpoint activity.

AU.L2-3.3.2: User Accountability – EDR tracks user actions on endpoints.

Incident Response

IR.L2-3.6.1: Incident Handling – EDR provides tools for detecting, containing, and investigating incidents.

IR.L2-3.6.2: Incident Reporting – EDR generates data needed for incident reports.

EDR Solutions for Defense Contractors

Several EDR platforms are well-suited for CMMC compliance:

CrowdStrike Falcon

Overview: Cloud-native EDR platform widely used in government and defense sectors.

Strengths:

• Excellent threat detection and intelligence
• Lightweight agent with minimal performance impact
• Strong government sector presence
• FedRAMP authorized options available

Considerations:

• Higher cost than some alternatives
• Cloud-based architecture (verify contract requirements)
• Pricing per endpoint can add up

Microsoft Defender for Endpoint

Overview: Enterprise EDR integrated with Microsoft 365 and Windows.

Strengths:

• Included with Microsoft 365 E5 or available as add-on
• Deep Windows integration
• Available in GCC and GCC High environments
• Unified with other Microsoft security tools

Considerations:

• Best suited for Microsoft-centric environments
• Less mature than dedicated EDR vendors
• Requires proper licensing configuration

SentinelOne

Overview: AI-powered EDR with autonomous response capabilities.

Strengths:

• Strong autonomous detection and response
• On-premises and cloud deployment options
• Good performance and low resource usage
• Competitive pricing

Considerations:

• Newer to government market than some competitors
• Verify FedRAMP status for your requirements

Carbon Black (VMware)

Overview: Established EDR platform now part of VMware.

Strengths:

• Long history in endpoint security
• Strong behavioral analysis
• Good enterprise management features
• On-premises deployment available

Considerations:

• Integration with VMware ecosystem
• Transition under VMware ownership
• May be complex for smaller organizations

Huntress

Overview: Managed EDR designed for small and medium businesses.

Strengths:

• Managed by security experts (you do not need to monitor alerts)
• Designed for resource-constrained organizations
• Affordable for small businesses
• Human threat hunting included

Considerations:

• Relies on Huntress team for response
• Less direct control than self-managed EDR
• May not suit organizations wanting in-house control

Self-Managed vs. Managed EDR

Choosing between self-managed and managed EDR is a critical decision for small defense contractors.

Self-Managed EDR

You operate the platform:

• Deploy and configure EDR agents
• Monitor alerts and dashboards
• Investigate and respond to threats
• Tune detection rules
• Maintain the platform

Best for:

• Organizations with security staff
• Companies wanting direct control
• Larger businesses with resources

Challenges:

• Requires trained personnel
• 24/7 monitoring difficult for small teams
• Alert fatigue without proper tuning

Managed EDR (MDR)

A security provider operates the platform:

• Provider deploys and manages EDR
• Security analysts monitor 24/7
• Provider investigates alerts
• You receive actionable notifications
• Provider handles platform maintenance

MDR stands for Managed Detection and Response—EDR combined with professional security monitoring and response services.

Best for:

• Small businesses without security staff
• Organizations prioritizing core business
• Companies needing 24/7 coverage affordably

Challenges:

• Less direct control
• Dependent on provider quality
• Must ensure provider meets security requirements

Implementing EDR for CMMC

Step 1: Define Your Scope

Identify all endpoints requiring EDR:

• Workstations accessing CUI
• Servers storing or processing CUI
• Laptops used by employees
• Any system in your CUI boundary

Step 2: Evaluate Solutions

Consider factors including:

• Detection capabilities and threat intelligence
• Deployment options (cloud vs. on-premises)
• Integration with existing tools
• Management complexity
• Total cost including licensing, management, and response

Step 3: Verify Compliance Fit

Ensure your chosen solution:

• Meets FedRAMP requirements if cloud-based
• Supports your specific CMMC requirements
• Provides necessary logging and reporting
• Can be properly documented for assessors

Step 4: Deploy Across All Endpoints

Roll out EDR to every system in scope:

• Install agents on all workstations and servers
• Configure appropriate policies
• Verify agents are reporting correctly
• Address any deployment issues

Step 5: Configure Detection and Response

Tune your EDR for your environment:

• Enable appropriate detection rules
• Configure automated response actions
• Set up alerting to appropriate personnel
• Integrate with SIEM if applicable

Step 6: Establish Response Procedures

Create processes for handling EDR alerts:

• Who receives alerts and when
• Initial triage procedures
• Escalation paths for serious threats
• Documentation requirements
• Integration with incident response plan

Step 7: Document for Assessment

Prepare evidence for CMMC assessors:

• EDR deployment documentation
• Configuration settings
• Sample alerts and response records
• Coverage reports showing all systems protected

EDR Costs for Defense Contractors

EDR pricing varies by solution and deployment model:

Self-Managed EDR

Solution	Approximate Cost
Microsoft Defender for Endpoint	$5-12 per user/month (varies by license)
CrowdStrike Falcon	$8-18 per endpoint/month
SentinelOne	$6-12 per endpoint/month
Carbon Black	$6-15 per endpoint/month

Managed EDR (MDR)

Solution	Approximate Cost
Huntress	$3-5 per endpoint/month
Arctic Wolf	$15-30 per endpoint/month
CrowdStrike Falcon Complete	$15-25 per endpoint/month
Expel	$15-25 per endpoint/month

Note: Pricing varies by volume, contract terms, and specific features. Obtain quotes for accurate budgeting.

Key Takeaways

EDR provides essential capabilities that traditional antivirus cannot match, including behavioral detection, continuous monitoring, and incident response support. For CMMC Level 2 compliance, EDR addresses requirements across System and Information Integrity, Audit and Accountability, and Incident Response.

Small defense contractors should consider managed EDR services to gain enterprise-grade protection without dedicated security staff. Larger organizations may prefer self-managed solutions for greater control.

Deploy EDR across all endpoints in your CUI environment and document your implementation for CMMC assessors.

Related Articles:

• What is CMMC Level 2?
• Essential Tools for CMMC Compliance
• SIEM Solutions for CMMC Compliance
• NIST SP 800-171 Rev 2 – System and Information Integrity
• 32 CFR Part 170 – CMMC Program Rule

Official Sources: This article is based on NIST SP 800-171 Revision 2 and 32 CFR Part 170. Product information should be verified with vendors for current features and pricing.

Need help selecting and implementing EDR for CMMC compliance? Contact Greypike for expert guidance on Level 1 and Level 2 certification, or get started with Obolix to streamline your compliance journey.