receiving, from a source base station of a wireless network, a handover command that indicates a handover to a target base station for communication in the wireless network, and identifies a location for a system information block;

receiving, from the target base station, information that comprises a system information block;

determining whether the target base station is a legitimate base station of the wireless network based at least on determining whether the received system information block from the target base station is at the location identified by the handover command indicating that the target base station is a legitimate base station; and

performing a handover based on the handover command and a determination that the target base station is a legitimate base station.