Matterhorn Framework will damage your printer

[JohnD34]

I'm receiving messages whenever I attempt to print that Matterhorn malware is attacking my computer. It takes up to several minutes to be able to print and is becoming unreliable because of this bug not being addressed. I've tried updates to drivers but it will not work correctly.

[Jay_G24]

Hi @JohnD34,

I'd like to help!

Try updating mac and printer firmware

To update the printer's firmware, refer - HP Printers - Updating or Upgrading Printer Firmware 

 To update Mac, try these steps - How to update the software on your Mac

Uninstall HP Easy Start

• Click on Spotlight icon and type HP Uninstaller or by opening HP Easy Start.
• Click on Continue to uninstall the software.
• When prompted for Password, type in your system password
• You can also uninstall by opening HP Easy Start.

 Download HP Easy Start and install the printer.

• Download HP Easy Start and follow the on-screen to complete the installation. 

You can also install the HP Smart App from the APP store.

You may also add the AirPrint printer to the Mac printer queue

Add the Air Print printer to the Mac printer queue

Confirm you are using Air Print by adding the printer in System Preferences.

1. Click the Apple menu, click System Preferences, and then click Print & Scan or Printers & Scanners.
2. Check if your printer name displays in the Printers list, and then do one of the following steps.
   • If your printer is listed, remove and re-add the printer to confirm it is set up for Air Print. Click the printer name, click the minus sign "-" to delete the printer, click the plus sign "+"click Add Printer or Scanner, click the printer name and then continue to the next step.
   • If your printer is not listed, click the plus sign, click Add Printer or Scanner, click the name of your printer, and then continue to the next step.
3. Confirm Air Print or Secure Air Print displays in the Use or Print Using menu, and then click Add.
4. Open a document or photo, click File, and then click Print.

Hope this helps! Keep me posted. 

And, Welcome to the HP Support Community. 

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