A re-usable security hard tag for use with containers. The hard tag comprises two portions that are pivotally connected at first portion ends and the portions include semi-circular, outwardly extending flanges. A security tag is associated with one of the two portions. A displaceable pin of a latch mechanism locks together respective pin receptacles of each portion. The flanges couple to the bottom edge of either end of a container whereupon closure of the two portions' free ends about a hinge causes the pin to latch through the pin receptacles. The only way retract the pin and thereby release the hard tag from the container is by positioning the hard tag/container assembly adjacent a properly sized magnet available at a point of sale in a retail establishment. Non-removal of the hard tag before leaving the retail establishment causes store electronics to detect the security tag and set off an alarm or other warning.