Mine was like:
SECURITY
SECURITY: 1
Created Date: 2018/06/26
Update Date: 2018/07/17
Type : Security
Status: In Progress
Status Update Date: 2018/07/17
Due Date: 2019/06/26
SUB ACTIVITIES: 1
Create Date: 2018/07/17
Update Date: 2018/08/28
Type: Security Screening
Status: In Progress by CBSA
Status Updated Date: 2018/08/28
Due Date: 2018/08/16
Security Screening Type: Comprehensive
Priority: Normal
--------------------------------------------------------
So yeah yours does look like it started in November, again, wicked fast. Maybe you got lucky and someone looked at your file very soon after it started.