Hi, the trojan block actually happened on pardot.com. See the log below. Thank you!
-Log Details-
Protection Event Date: 8/5/19
Protection Event Time: 9:33 AM
Log File: effccaae-b78d-11e9-bfce-54e1adf51473.json
-Software Information-
Version: 3.8.3.2965
Components Version: 1.0.613
Update Package Version: 1.0.11870
License: Trial
-System Information-
OS: Windows 10 (Build 17763.615)
CPU: x64
File System: NTFS
User: System
-Blocked Website Details-
Malicious Website: 1
, , Blocked, [-1], [-1],0.0.0
-Website Data-
Category: Trojan
Domain: go.pardot.com
IP Address: 35.174.78.146
Port: [58230]
Type: Outbound
File: C:\Program Files\WindowsApps\Microsoft.Office.Desktop.Outlook_16051.11727.20244.0_x86__8wekyb3d8bbwe\Office16\OUTLOOK.EXE