CMMC Ready — CMMC Level 2
86% NIST 800-171 coverage. 2 control gaps identified.
CMMC Status
CMMC Ready
Target Level
Level 2
NIST Coverage
86%
Slack GovSlack
by Salesforce
Overview
Slack GovSlack by Salesforce is a collaboration solution with FedRAMP authorization targeting CMMC Level 2 compliance. It provides 86% coverage of NIST 800-171 controls for defense contractors handling CUI.
What This Means for Defense Contractors
Slack GovSlack meets the architectural requirements for CMMC Level 2. However, CMMC compliance depends on your entire system boundary — not just individual tools. There are 2 NIST 800-171 control gaps that need remediation before assessment. Defense contractors using Slack GovSlack should verify that their System Security Plan (SSP) documents how this tool fits within their authorization boundary.
NIST 800-171 Coverage
Control Gaps
Using Slack GovSlack without addressing these NIST 800-171 controls may result in findings during a CMMC assessment:
Strengths
Using Slack GovSlack in a CMMC Environment
For defense contractors already using Slack GovSlack, the path to CMMC compliance involves documenting the tool in your System Security Plan (SSP), ensuring proper access controls are configured, and validating that Slack GovSlack's security controls align with your authorization boundary. With 86% NIST 800-171 coverage, Slack GovSlack provides a strong compliance foundation, though the 2 remaining control gaps will need compensating controls or supplementary tools.
CMMC-Ready Collaboration Alternatives
CMMC Compliance Analysis for Slack GovSlack
Slack GovSlack represents a strong collaboration platform choice for CMMC Level 2 environments, leveraging its FedRAMP Moderate authorization to provide 86% NIST 800-171 coverage. For defense contractors, GovSlack effectively handles CUI through encrypted channels, secure file sharing, and integrated DLP capabilities that prevent inadvertent CUI exposure. The platform excels in Access Control (3.1.x) with robust MFA implementation, System and Communications Protection (3.13.x) through encryption at rest/transit and zero-trust architecture, and Audit and Accountability (3.3.x) with comprehensive logging and SIEM integration. However, it falls short on Identification and Authentication controls 3.5.1 (identifier management) and 3.5.3 (device identification), requiring compensating controls for complete compliance. During a C3PAO assessment, evaluators will scrutinize GovSlack's boundary inclusion, examining whether CUI processing occurs within Slack channels and validating compensating controls for the identified gaps. The tool can exist within the CMMC authorization boundary due to its FedRAMP authorization, but requires careful boundary documentation and compensating control implementation. Compared to Microsoft Teams GCC High or Cisco Webex for Government, GovSlack offers superior user experience and third-party integrations while maintaining equivalent security posture. However, competitors like Teams GCC High may provide better native NIST control coverage without requiring extensive compensating controls, making GovSlack slightly more complex to implement in CMMC environments.
Configuration Guide
Configure GovSlack for CMMC readiness by implementing compensating controls for gaps 3.5.1 and 3.5.3. First, establish device management integration with Microsoft Intune or similar MDM solution to address device identification requirements (6-8 weeks). Document identifier management procedures in your System Security Plan, detailing how user provisioning/deprovisioning aligns with organizational identity management systems. Configure advanced audit logging to capture all CUI access events and integrate with organizational SIEM platforms like Splunk or QRadar. Implement data loss prevention policies within GovSlack to automatically detect and protect CUI based on organizational data classification schemes. Enable guest access restrictions and external sharing controls to prevent unauthorized CUI disclosure. Establish continuous monitoring procedures including monthly access reviews, quarterly configuration assessments, and annual penetration testing of GovSlack integration points. Document all compensating controls in POA&M entries with specific timelines for full remediation. Prepare evidence packages including configuration screenshots, policy documentation, audit logs demonstrating CUI protection, and MDM integration reports for C3PAO review. Timeline: Initial configuration requires 8-12 weeks, with ongoing monthly compliance validation activities. Critical success factors include maintaining FedRAMP boundary alignment and ensuring all compensating controls are properly documented and tested.
Configuration Checklist
- 1ISSO: Document GovSlack within CMMC authorization boundary and update System Security Plan sections 9.1 (boundary definition) and 13.1 (system inventory)
- 2Sysadmin: Configure MDM integration with Intune/Jamf to address NIST 3.5.3 device identification requirements and document in POA&M
- 3ISSO: Develop compensating control documentation for NIST 3.5.1 identifier management gaps in SSP section 3.5
- 4Sysadmin: Enable GovSlack Enterprise Key Management and validate encryption settings meet FIPS 140-2 requirements for CUI protection
- 5ISSO: Configure audit logging integration with organizational SIEM and document retention policies per NIST 3.3.1 requirements
- 6Sysadmin: Implement data loss prevention policies within GovSlack to automatically classify and protect CUI content
- 7Contracts: Validate GovSlack BAA aligns with DFARS 252.204-7012 cloud computing security requirements
- 8ISSO: Establish monthly access review procedures and document in continuous monitoring strategy per NIST 3.1.1
- 9Sysadmin: Configure guest access restrictions and external sharing controls to prevent unauthorized CUI disclosure per NIST 3.1.20
- 10C3PAO: Prepare evidence package including configuration screenshots, audit logs, and compensating control validation for assessment review
Related Compliance Assessments
Frequently Asked Questions
Is Slack GovSlack CMMC compliant?
Slack GovSlack meets CMMC Level 2 requirements with 86% NIST 800-171 control coverage.
What NIST 800-171 controls does Slack GovSlack cover?
Slack GovSlack covers 86% of the 110 NIST 800-171 controls, with 2 gaps primarily in 3.5.1 and 3.5.3 control families.
What are the CMMC compliance gaps for Slack GovSlack?
The primary gaps are in controls 3.5.1, 3.5.3. These require supplementary tools or process controls to achieve full CMMC Level 2 compliance.
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