A security tag for mounting on a handle of a container such as a paint can or plastic pail includes a tag housing having a tubular configuration and a lumen extending through the housing. The housing further includes a flange extending radially outwardly from the tubular housing. The flange is adapted to receive a security device, such as an electronic article surveillance tag or an RFID tag. The security tag includes a cover mounted to the flange to encapsulate the security device. The security tag may be placed onto, e.g., a wire loop handle prior to mounting the handle to the container.