How can device impersonation attacks be effectively prevented in a ZTA?

D SPA is a security protocol that prevents device impersonation attacks in a ZTA by hiding the network infrastructure from unauthorized and unauthenticated users. SPA uses a single encrypted packet to convey the user’s identity and request access to a resource. The SPA packet must be digitally signed and authenticated by the SPA server before granting access.​This ensures that only authorized devices can send valid SPA packets and prevents spoofing, replay, or brute-force attacks12. Reference​= Zero Trust: Single Packet Authorization | Passive authorization Single Packet Authorization | Linux Journal