I have the same case. Security not started. Today IRCC told me that perhaps Security has started but it is not flagged in the system (but for me it can mean that also didn't start at all).I am in similar situation , called IRCC twice still there is no progress , RROC Ottawa is very slow , my case is very simple and I am single applicant , I am going to request GCMS notes after 4 weeks
If I may ask how did you find which office is proceeding your case?