The ability to sign into Office365 must be disabled.
An XCCDF Rule
Description
<VulnDiscussion>Office 2013 can be configured to prompt users for credentials to Office365 using either their Microsoft Account or the user ID assigned by an organization for accessing Office 365. Access to Office 365 will not be permitted and only locally installed and configured Office installations will be used.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-228535r508020_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Office 2013 -> Miscellaneous -> "Block signing into Office" to "Enabled: org ID only".