A locking assembly for a closure system having a first vertical member configured to extend downward along a sidewall of a closure and including a first hook element and a second hook element. A second vertical member having a first hook element and a second hook element is configured to be connected to the first vertical member such that the second vertical member extends downward along an opposite side of the sidewall of the closure from the first vertical member. When the locking assembly is installed on the closure system in a locked position, the first and second vertical members are dimensioned and configured so that the first hook elements are disposed above opposing sides of a top surface of the closure and the second hook elements are disposed beneath opposing sides of the sidewall of the closure for preventing the closure from being removed from the container.