Right-click file → Properties → Digital Signatures. Legitimate EFS-related files are signed by Microsoft. No signature = high risk.
A specialized user account/key authorized to decrypt any file on the system. efsuiexe efs installdra work
A critical administrative role. If a user loses their private key, a designated Data Recovery Agent (DRA) can use their own certificate to recover the encrypted files. Right-click file → Properties → Digital Signatures