Mac users received a’malware’ warning on their screens when trying to access their HP printer. This is a story of those keys, and how a Hewlett Packard (HP) error caused problems for a lot of people. The messages generally appeared when people were trying to print to their HP printers. The certificates used to sign software on Mac (and iOS, for that matter) are provided and managed by Apple. In the meantime, we recommend that the developer certificate used to. sign these. drivers had been revoked.”]
Source: https://blog.malwarebytes.com/malwarebytes-news/2020/10/hp-printer-issue-on-mac/