A concealed security bar comprising a concealing and deploying means for the security bar for a sliding patio door comprises a security bar, a lifting mechanism, and a releasing means. The security bar sits along a ground surface between a wall portion and a sliding door in order to prevent opening of the door. The lifting mechanism comprises a mechanism which pivots the bar into an upright position along the wall surface in order to allow the door to function as normal. The releasing means is located along the wall surface at a height easily accessible by a user. Upon depressing the releasing means, the lifting mechanism is activated in order to lift the bar without need for reaching down to the ground to grab the bar.