

Like the other commenter said, they’re expiring regularly. Host keys expire ~monthly and there’s a cronjob to reach out to the certificate authority server to renew them. User certs expire ~daily and the first time I ssh on any given day I have to authenticate with the CA. Recently tied it to PocketID for SSO.
I mean, the CA is also self hosted so I’m not sure what you think the extra attack vector is here.