I noticed my Windows Defender quarantined the DisplayFusion screen saver. From my Event Viewer log (Windows Defender, event ID 1116):
Windows Defender Antivirus has detected malware or other potentially unwanted software.
For more information please see the following: https://go.microsoft.com/fwlink/?linkid=37020&name=Trojan:Win32/Azden.B!cl&threatid=2147723291&enterprise=0
Name: Trojan:Win32/Azden.B!cl
ID: 2147723291
Severity: Severe
Category: Trojan
Path: file:_C:\Program Files (x86)\DisplayFusion\DFSSaver.scr
Detection Origin: Local machine
Detection Type: FastPath
Detection Source: System
User: NT AUTHORITY\SYSTEM
Process Name: Unknown
Signature Version: AV: 1.255.95.0, AS: 1.255.95.0, NIS: 118.1.0.0
Engine Version: AM: 1.1.14305.0, NIS: 2.1.14202.0