Basic attestation CA1 certificate untrusted

I have the same question as the previous poster. I saw this certificate (MBPro) in my Login keys and it's marked in red as untrusted. It was not there the day before because I spent several minutes browsing through all of my various certificates in all of the sections and categories. And there was nothingon in red? Therefore, I am concerned. I deleted it. How does a certificate like that just pop-up suddenly? And why is it untrusted? Is it malicious? And will deleting it affect my logging in? I read the information that was attached but it didn't help me understand it's purpose nor did it address the trust warning. Thank you.