Modern vulnerability scanners allow for both authenticated and unauthenticated scans. SAM uses cryptographic measures to prevent unauthenticated users accessing the system. The vulnerability allowed a Windows computer to be compromised by unauthenticated clients and computer worms. The manuscript is unauthenticated, however, and is considered probable forgery among scholars of Iranian Studies. This is the so-called null session connection, which allows unauthenticated users. Unlike unauthenticated Diffie-Hellman, SPEKE prevents man-in-the-middle attack by the incorporation of the password. Many inhabitants of the valley descend from tribes of Arab origin (unauthenticated information). Two other unauthenticated photos of Brocius have been provided by descendants. An unauthenticated photo of Brocius is displayed in the Bird Cage Theater Museum in Tombstone.