CIS monitors everything you do on your computer and logs it - not in Excel but in the cloud where it's kept for 7 years. They also monitor your mobile phone activity if you installed the MDM apps. It is highly searchable in the event it needs to be and kicks off reports that have AI built-in to "predict" any potential issues.
Acting on any of it is at the discretion of your manager, HR, ER or anyone who wants to find any reason at all to let you go. That being said, a lot of big companies do this too - they just don't seem to weaponize it against their employees like this one seems to.