Systems (100) and methods (1300) for operating a security tag (132). The methods involve: slidingly coupling a first engagement member (212) of the security tag to a first sidewall (208) forming a first right angle with a base (220) of an article; and extending a securement member (218) of the security tag across an exterior surface of the base of the article. A second engagement member (210) of the security tag is slidingly coupled to a second sidewall (206) opposed from the first sidewall and forming a second right angle with the base of the article. A length of the securement member is then decreased so as to place the securement member in a tensioned position whereby the security tag is secured to the article. The securement member can be locked in the tensioned position using a mechanical locking mechanism (222) of the security tag.