What is going on with HP Printer malware????

The HP link that you shared provides drivers and software that pre-date this latest nightmare which began about a week ago or after the macOS Catalina version 10.15.7 update. I was originally told there was a Certificate issue between Apple and HP that caused this malware detection issue.

Please don’t lose patience with me. I have reset the printing system several times now. When I did the Catalina update, I did not get the 5.1 driver update as a secondary update in the Printers & Scanners preferences. I’m at the office of another Apple user who is experiencing the same problem. He did have the 5.1 driver update pending - he did the update and reset as instructed above but is also still facing the Apple malware pop ups.

Eau Rouge, thank you! I went to HP this morning and found the November 2, 2020, driver update and installed it per your instructions above. I am able to WIFI Print once again! The HP website noted a Third Party Researcher alerted them to the problem with the InkJet printers. Only problem now: Apple malware warning popups continue. I'm just NOT responding to them and keeping them off to the side of my desktop for now. I am not deleting any files as suggested nor hitting the OKAY button that just causes the next alert to pop up. As to AirPrint, I tried that earlier with no success. Thank you for all your help, I'm hopeful there will be another Catalina OS update to stop the Malware Popups soon.

Thank you VikingOSX for your time and consideration. Unfortunately, I'm still getting multiple Apple malware warnings and have lost all access to my HP Printer/Scanner/Fax at home and at the office. After downloading macOS Catalina 10.15.7, my iMac now has lost contact and I'm getting constant repetitive malware warnings every 4 seconds! If I let the warnings sit on my Desktop, I can at least use the computer with the annoying warning sitting there. If I click"OK" the warnings keep popping back up. I'm going to guess the latest download did not include the appropriate HP Printer Drivers v5.1 that you suggested. After 40 years of Apple products, this is the first one I've experienced that is not User error!

The HP Smart app only provides general scanning services (preset photo and page sizes) and a bunch of organizational services on cloud services that I don't need. In addition to losing System Preference Scanning (where I could calibrate the exact size and angle of image scanning) and Printing, now every time I try to Print something from another app (Pages, Safari, etc.), the Apple malware warnings pop up. This is insane. Is the System Preference printing service being deleted?

I can't tell you how much I appreciate you and Eau Rouge responding to my frustration, but I do. Also, I do not mean to be contradicting anything you have suggested. I am just not seeing any "HP Driver v5.1 Update" in System Preferences. I have updated Catalina and rebooted my computer. I have right-clicked and reset printing system. I have added the HP Printer and set it as the default. At no time during any of the steps was an "HP Driver v5.1 Update" mentioned. Attempts to scan or print from System Preferences continues to cause Apple malware popup warnings and Scanner message "Failed to open a connection to the device (121345)."

Thank you once again. So that is the problem, Apple or HP are making my printer obsolete. Progress means less - very disappointing. I have downloaded the HP Smart app version 5.5.5 that is okay for pre-set page and photo scanning only. HP has already identified my current operating system and provided all applicable software in the HP Smart download. The HP Easy Scanner app is useless - causes the same Apple malware warning popups. Went back to System Preferences, repeated all steps - same Apple malware warnings. I want to believe I've made a mistake somewhere, but I think I'm just going in circles.

Sorry, 30 years!

Now, I’m getting prompted on my iPad to download iPadOS version 14.1. I am very reluctant to do so.