What should I get rid off? Apparently Malware(ElementaryTypefld)

Are you running any VPN, Anti-Virus, or Cleaning apps?

We need to see what all is running, a report from this will not display any personal info...

Using EtreCheck - Apple Community

EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info.

https://www.etrecheck.com/

Thanks for Old Toad’s etrecheck instructions…

Slow iMac 2017 - Apple Community

Use the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

First, start your Mac in "Safe Mode": How to use safe mode on your Mac - Apple Support. Starting in Safe Mode takes longer than usual so let it finish.

While in that mode, drag all the files in those three folders to the Trash except those with the following in their names:

Adobe

Apple

Canon

Dropbox

Google

Logmein

Zoom

Those are ok. Leave them in place. When you are finished those are the only files that should remain in those folders.

Then, restart your Mac normally and confirm the alert messages cease to appear.

Note: Like all non-Apple "anti-virus" products, "Trusteer Rapport" is worthless. You can see for yourself it did nothing to prevent the problematic "... will damage your computer" message. Uninstall it according to its instructions. Rule 1 of Macs is don't install junk.

Where exactly are you seeing this error?

Do you really ed Trusteer?

You're welcome. Glad to help.