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The ability of Lync to store user passwords must be disabled.


Finding ID Version Rule ID IA Controls Severity
V-70901 DTOO420 SV-85525r1_rule Medium
Skype for Business 2016 provides a single, unified client for real-time communications, including voice and video calls, Lync Meetings, presence, instant messaging, and persistent chat. These features require the ability to log into the service with a username and password. The Lync client could potentially be configured to store user passwords locally which would allow it to be susceptible to compromise and to be used maliciously.
Microsoft Skype for Business 2016 STIG 2016-12-21


Check Text ( None )
Fix Text (F-45760r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Skype for Business 2016 -> Microsoft Lync Feature Policies "Allow storage of user passwords" to "Disabled".