Abstract: A storage device with improved security performance is provided. The storage device comprises a first non-volatile memory storing a firmware image, a second non-volatile memory storing an emergency image, and a storage controller controlling the first and second non-volatile memories, wherein the storage controller checks an integrity of the firmware image received from the first non-volatile memory, loads and executes the emergency image from the second non-volatile memory when the integrity check of the firmware image fails, receives a recover image from an external device based on the emergency image, and provides the recover image to the first non-volatile memory.

Abstract: Disclosed is a face protector (100) configured to be rotated upward and downward while being coupled to coupling pieces (12) provided at opposite sides of a helmet (10), so as to protect the wearer's face. The face protector includes a body (120) for protecting the wearer's face, a pair of coupling units (140) configured to be fixedly coupled to both the coupling pieces of the safety helmet, respectively, and a plurality of links (160a,160b) used to connect the coupling units to opposite rear ends of the body, respectively, so as to restrict rotation of the body. The face protector has the effects of preventing the wearer's head from colliding with any object above the head in a narrow space, maximizing wearing convenience of the protector with a low wind-resistance and negligible weight-deflection, and guaranteeing easy and convenient use of the protector by preventing the protector from being unintentionally rotated downward by a weight thereof.