Slack (Commercial)
by Salesforce
FedRAMP Status
Not FedRAMP Authorized
Impact Level
N/A
Category
Collaboration
Overview
Commercial Slack is one of the most popular collaboration platforms but has no FedRAMP authorization. Only GovSlack (FedRAMP High, AWS GovCloud) is approved for CUI. CUI leaking into commercial Slack channels is one of the most common compliance violations in the defense industrial base.
CUI Risk Assessment
Commercial Slack is not FedRAMP authorized. No US-only data residency, no FIPS 140 encryption, no GovCloud infrastructure. CUI frequently leaks into Slack channels.
NIST 800-171 Violations
Using Slack (Commercial) for CUI without FedRAMP authorization may violate these NIST 800-171 controls:
FedRAMP Compliant Alternatives
Frequently Asked Questions
Is commercial Slack compliant for defense work?
No. Commercial Slack is not FedRAMP authorized. GovSlack is the FedRAMP High authorized version running on AWS GovCloud with US-only data residency.
What if CUI ends up in commercial Slack?
This is a security incident and DFARS 7012 violation. You must report it, remediate, and migrate CUI communications to GovSlack or Microsoft Teams GCC High.
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