Abstract: A window security screen and latch assembly are disclosed. The window security screen includes a screen frame, an infill attached to the screen frame and a latch assembly attached to the screen frame. The latch assembly includes a latch housing, a locking pin extending through the latch housing and through a side of the screen frame to establish a locked position, and a latch release disposed within the latch housing. The latch release is biased to prevent the locking pin from moving from the locked position in the absence of an external force applied to the latch release, the locking pin being movable between the locked position and an unlocked position when the external force is applied to the latch release.