Abstract: There is disclosed an anti-shoplifting device for projecting holders (4), in particular for the display of blister packs, comprising a first (1) and a second body (2), which are mutually movable between a locked position, in which they define an opening (21) for the passage of a hooked projecting holder, ensured by locking assembly (8, 9, 10), and an unlocked position achieved by unlocking assembly (12, 13, 14, 15) acting on the locking assembly (8, 9, 10). The locked and unlocked positions are such that the device is respectively hooked or removable from the projecting holder (4). Further, the first and second bodies (1, 2) are rotateably coupled in a separable manner by a rotating structure.