2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142263We present a supervised secure entanglement sharing protocol via tripartite W states for faithful quantum teleportation. By guaranteeing a secure entanglement distribution in the charge of a third believed supervisor, quantum information of an unknown state of a 2-level particle can be faithfully teleported from the sender to the remote receiver via the Bell states distilled from the tripartite W states. We emphasize that reliable teleportation after our protocol between two communication parties depends on the agreement of the supervisor to cooperate via taking the W states as both the quantum channel and eavesdropping detector. The security against typical individual eavesdropping attacks is proved and its experimental feasibility is briefly illustrated.7 pages, 4 figures, revised the detection mode and security analysis, added one successful eavesdropping rate plot in Fig. 3Quantum PhysicsCryptography and Securitytext