The Thief Knot is a binding knot primarily used to secure items like ditty bags or bread bags, where detecting tampering is important. It resembles the Square Knot but is intentionally tied differently to reveal if someone has retied it. Sailors historically used it to protect personal belongings, as a thief would likely retie it with a Square Knot, exposing their interference.

Also Known As

• Bag Knot
• Bread Bag Knot

Advantages

Effective for detecting tampering in low-security applications, such as securing personal bags, by revealing unauthorized retying.

Disadvantages

Insecure and prone to coming untied; avoid using for heavy or critical items.