Is the MDM used to access, control and sync everything from one's cell phone and home computer?

Question

My personal iPhone appears to have been controlled as a restricted or managed mobile device even after the removal of the Outlook app that was used to access work email. Recently, it appeared that the work account MicroSoft Office 365 has been configured to FORCE sync automatically even though the Edge Browser is not used to sign in to work account. The sync is already on. A pop-up message states that it will sync "all devices. " We sometimes have to log in to work account from home computer. Here are the questions:

1. Is everything on one's personal iPhone that is still under the control of MDM synced to work account or the MDM profile without one's knowledge?
2. When we use home computer to access work account, are our home computers or everything in my computer being synced to work account system?
3. Is there also an MDM profile created for any home computers (used to access work account) on the organization's MDM server?
4. What makes my home computer screen visible and enables someone to hijack a session remotely while I use a home computer to access work account? Actions that were not initiated by me appeared in real time in documents I was working on using a home computer. This also happened many times at work while working on documents in OneDrive.
5. Does it mean that some kind of remote control or MDM in MicroSoft Office 365 environment has been installed on my home computer without my knowledge?
6. Can someone "pretend as you" to access and edit the documents you're working on IN REAL TIME either at work while using a work computer or at home while using a home computer? Here is an example: A comment box was often inserted in the document I was working on. It had my initials. However, I could not remove it or enter text. Why does it appear that I was the one inserting a comment box in my own document I was working on? The documents were not shared or have co-editors. 

Answer 1

@WKATCL Thanks for posting in our Q&A.

For this issue, I will share some information.

Q1: While MDM policies can enforce security measures and manage work-related data on personal devices, they are typically designed to respect user privacy and do not sync personal data to work accounts without the user's knowledge.

Q2: When you use your home computer to access your work account, the policies and practices in place generally ensure that only work-related data and activities are managed and monitored. So, your personal data and applications on your home computer are not synced to the work account system

Q3: The device is not enrolled to intune, there is no MDM profile created for this device.

Q5: It is highly unlikely that any kind of remote control or Mobile Device Management (MDM) in Office 365 environment would be installed on your home computer without your knowledge.

In the above, I shared some information what I know. For the two questions I didn't answer, it is suggested to create an online support ticket to do some check on your specific device. Here is the support link:

https://learn.microsoft.com/en-us/mem/get-support

Thanks for your understanding and hope everything goes well with you.

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