1. A memory device comprising: a memory storing security information; and a controller in communication with the memory, wherein the controller is operative to: place the memory device in an operational state only after a host device validates the stored security information; and after the memory device is in the operational state: power-up in read-only mode; receive a command from the host device to switch to a write-once, read-many (WORM) mode; in response to the command from the host device, switch from the read-only mode to the WORM mode; and while in the WORM mode: receive a write command from the host device; and determine if the write command should be performed.