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The 25 Microsoft Teams security checks Black Cat runs

Black Cat SSPM evaluates 25 security policies against your Microsoft Teams configuration on every scan, classifies each finding by risk, and provides remediation steps. Browse them by topic below.

How to connect Microsoft Teams — what access Black Cat needs, and why.

Access control & privilege (12)

Data sharing & exposure (4)

Governance & compliance (5)

Other checks (4)

severity: low Archived Team fix difficulty: easy #

Review archived Teams and delete them if no longer needed to reduce attack surface

  1. Navigate to Teams Admin Center > Teams > Manage Teams
  2. Filter for archived teams
  3. Review each archived team with its owner to determine if it is still needed
  4. If no longer needed, delete the team to remove associated data and permissions

Vendor docs ↗

Satisfies: NIS2 Directive NIS2-21.e.4 DORA (SaaS Security) DORA-9.10

severity: low Skype for Business Interop Enabled fix difficulty: easy #

Disable Skype for Business interop if not required to reduce external communication surface

  1. Navigate to Teams Admin Center > External Access
  2. Locate the "Skype for Business" interoperability setting
  3. Toggle it to "Off" if Skype for Business communication is no longer needed
  4. Save the external access settings

Vendor docs ↗

Satisfies: NIS2 Directive NIS2-21.e.4 DORA (SaaS Security) DORA-9.10

severity: high Unapproved Third-Party App fix difficulty: medium #

Block or submit unapproved third-party Teams apps for organizational review and approval

  1. Navigate to Teams Admin Center > Teams apps > Manage apps
  2. Locate the unapproved third-party app
  3. Review the app permissions and publisher details
  4. Block the app or submit it for organizational approval

Vendor docs ↗

Satisfies: ISO 27001:2022 A.5.23 CIS Controls v8 CIS-15.1 NIST CSF 2.0 GV.SC GDPR (SaaS Security) GDPR-28.1 HIPAA (SaaS Security) HIPAA-314.a NIS2 Directive NIS2-21.d DORA (SaaS Security) DORA-28.4

severity: medium Custom App Sideloading fix difficulty: easy #

Disable custom app sideloading in Teams app setup policies to prevent unauthorized apps

  1. Navigate to Teams Admin Center > Teams apps > Setup policies
  2. Select the relevant app setup policy
  3. Disable Upload custom apps (sideloading)
  4. Save the policy changes

Vendor docs ↗

Satisfies: ISO 27001:2022 A.5.23 CIS Controls v8 CIS-15.1 NIST CSF 2.0 GV.SC GDPR (SaaS Security) GDPR-28.1 HIPAA (SaaS Security) HIPAA-314.a NIS2 Directive NIS2-21.d DORA (SaaS Security) DORA-28.4

The information on this page is provided for general informational purposes and is believed to be accurate as of its most recent update. Product names, logos, and trademarks are the property of their respective owners and are used for identification purposes only; their use does not imply any affiliation with or endorsement by those owners. Descriptions of third-party applications and of compliance frameworks are based on publicly available documentation and may change over time.

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