Outlook must be configured to not allow hyperlinks in suspected phishing messages.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-223372 | O365-OU-000027 | SV-223372r961863_rule | CCI-000366 | medium |
| Description | ||||
| This policy setting controls whether hyperlinks in suspected phishing e-mail messages in Outlook are allowed. If you enable this policy setting, Outlook will allow hyperlinks in suspected phishing messages that are not also classified as junk e-mail. If you disable or do not configure this policy setting, Outlook will not allow hyperlinks in suspected phishing messages, even if they are not classified as junk e-mail. | ||||
| STIG | Date | |||
| Microsoft Office 365 ProPlus Security Technical Implementation Guide | 2025-03-05 | |||
Details
Check Text (C-223372r961863_chk)
Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Security >> Trust Center "Allow hyperlinks in suspected phishing e-mail messages" is set to "Disabled".
Use the Windows Registry Editor to navigate to the following key:
HKCU\Software\Policies\Microsoft\Office\16.0\outlook\options\mail
If the value JunkMailEnableLinks is REG_DWORD = 0, this is not a finding.
Fix Text (F-25033r442336_fix)
Set the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Security >> Trust Center "Allow hyperlinks in suspected phishing e-mail messages" to "Disabled".