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XCCDF
Microsoft Outlook 2016 Security Technical Implementation Guide
SRG-APP-000516
The default message format must be set to use Plain Text.
The default message format must be set to use Plain Text.
An XCCDF Rule
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The default message format must be set to use Plain Text.
Medium Severity
<VulnDiscussion>Outlook uses HTML as the default email format. HTML format poses a security risk by embedding information into the email itself, which could allow for release of sensitive information. If a user attempted to insert an HTML link into an email message, the link itself may direct to a malicious website. By sending emails in HTML format, the recipient could be subject to becoming infected by the malicious website.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>