What does the process amsengagementd do?

It is part of Apple's AppleMediaServicesUI private framework. It seems to have something to do with iCloud and probably other Apple media subscriptions. Even if you don't have any of that, the underlying processes are always there to support it.

You've installed some junkware on your M1 Mini: Bitdefender Virus Scanner, NetBarrier and VirusBarrier. Uninstall all according to the developer's instructions. You can check to see if you've removed all of the supporting files by downloading and running the shareware app Find Any File to search for any files with the application's or the developer's name in the file name.  For aforemented software you'd do the following search(es): 

1 - Name contains intego

2 - Name contains bitdefender

3 - Name contains virus barrier

Any files that are found can be dragged from the search results window to the Desktop or Trash bin in the Dock for deletion.

FAF can search areas that Spotlight can't like invisible folders, system folders and packages.  

I don't know what you're using NordVPN for but if' it's for privacy reasons only consider the following: unless you're using a true VPN tunnel, such as between you and your employer, school or bank's servers, they are essentially useless from a privacy standpoint.  Read these two articles: Public VPN's are anything but private and Former Malware Distributor Kape Technologies Now Owns ExpressVPN, CyberGhost, Private Internet Access, Zenmate, and a Collection of VPN “Review” Websites. 

It's possible you could have been compromised. Don't click on any link or button unless you know exactly what it does, especially on new sites.

Running Malwarebyter was the first thing you needed to do. Next, download and run Etrecheck.  Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

IMPORTANT:

Before running Etrecheck assign Full Disk Access to Etrecheck in the Etrecheck's Privacy preference pane so that it can get additional information from the Console and log files for the report:

Also click and read the About info to further permit full disk access.

Copy the report

and use the Additional Text button to include the report in your reply.

First, there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This user tip describes what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community.  

There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   

Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.

There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is desshoigned solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  

Uninstall NewBarrier and any other of those types of apps according to the developer's instructions.

AntiVirus Software should be removed as per Developers Instructions. They are unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation. 

The Built in Security  is all that is required. 

There are no known Windows-like Viruses in the wild that self replicate and affect macOS because of the underling UNIX  Foundation and Permission Limitation. 

Disk Cleaners, Optimizers and UnInstaller are not needed. They will often times attempt to Modify, Alter, Remove or Delete elements of the Operating System requiring a Re-Installation

Any and all the above types of Applications should be removed as per Specific Developers Instructions.

If you have a desktop Mac and are behind a good router you are well protected. However, if you have a laptop and use public WiFi networks while out then turning on the Firewall is a good idea.

But virus apps do nothing but take up system resources. All you need is Malwarbytes.

PhotosPete wrote:

I downloaded and ran the program. It said that it found no major issues but it doesn't like my three antivirus packages on the system. I'm uncomfortable about uploading its results to the group for all to see. Do you think that I am safe if the program didn't find anything? -Peter

AntiVirus Software should be removed as per Developers Instructions. They are unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation.

The Built in Security  is all that is required. 

There are no known Windows-like Viruses in the wild that self replicate and affect macOS because of the underling UNIX  Foundation and Permission Limitation. 

And is a lot of money down the rabbit hole for a Non Existing issue and Zero Return except empty pockets IMHO

No. I see these in the installed apps list:

Software Installs (past 60 days):

Install Date Name (Version)

2021-09-28 vdefsx92021092801 (10.7)

2021-09-30 vdefsx92021093001 (10.7)

2021-10-05 vdefsx92021100501 (10.7)

2021-10-07 vdefsx92021100701 (10.7)

2021-10-12 vdefsx92021101201 (10.7)

2021-10-14 vdefsx92021101401 (10.7)

2021-10-19 vdefsx92021101901 (10.7)

2021-10-21 vdefsx92021102101 (10.7)

2021-10-26 vdefsx92021102601 (10.7)

2021-10-29 vdefsx92021102901 (10.7)

2021-11-16 vdefsx92021111601 (10.7)

2021-11-18 vdefsx92021111801 (10.7)

2021-11-23 vdefsx92021112301 (10.7)

I have no idea what they are. Do you? Are they something to do with Twitter?

Do you have any idea what these files might be from or part of?

Software Installs (past 60 days):

Install Date Name (Version)

2021-09-28 vdefsx92021092801 (10.7)

2021-09-30 vdefsx92021093001 (10.7)

2021-10-05 vdefsx92021100501 (10.7)

2021-10-07 vdefsx92021100701 (10.7)

2021-10-12 vdefsx92021101201 (10.7)

2021-10-14 vdefsx92021101401 (10.7)

2021-10-19 vdefsx92021101901 (10.7)

2021-10-21 vdefsx92021102101 (10.7)

2021-10-26 vdefsx92021102601 (10.7)

2021-10-29 vdefsx92021102901 (10.7)

2021-11-16 vdefsx92021111601 (10.7)

2021-11-18 vdefsx92021111801 (10.7)

2021-11-23 vdefsx92021112301 (10.7)