An exemplary security enclosure for equipment has four substantially planar side panels with multiple engagement openings and is received on a surface. The panels have a generally square cross-section and have engagement protrusions along an edge that engage engagement openings in an adjacent panel or an interposed connector frame. A top panel is engaged across the upper end of the side panels using the same inter-fitting engagement protrusion and engagement opening pairing, which together with the surface, completely enclose the equipment. A tang is fixedly attached to one of the side panels and extends through the top panel. A puck lock receives engages an opening in the tang with a hasp that is completely enclosed within the lock, preventing relative motion of the panels. A surface mount include legs section extending downwardly from a side panel and present a downwardly oriented face, the face having an opening. A fastener dimensioned to slideably engage through the opening secure the security enclosure to the surface.