Anti‑counterfeiting thread is a specialized security fiber—often woven or printed with covert markings, RFID tags, or nano‑optical features—to protect high‑value goods from fraud. Its relevance spans apparel, luxury accessories, pharmaceuticals, and document authentication, where brand integrity and consumer safety are paramount. Anti‑Counterfeiting Thread market size reached approximately $1.2 billion in 2025, and the growth outlook projects a CAGR of 7.2% through the market forecast 2026‑2033, driven by tightening anti‑piracy regulations, rising counterfeit incidences, and rapid adoption of smart‑thread technologies. The scope covers polymer‑based, metallic, and hybrid threads across security, branding, and traceability applications.