A self-adhesive security label for a data carrier, such as a security document or document of value, with a substrate (40), to the front of which security features (12-18,42) are applied and the back of which is provided with a cold adhesive foil (34). The security label contains an integrated circuit (30) disposed in a recess (36) of the adhesive foil (34) for storing security data and an antenna (32) disposed intermediate between substrate (40) and adhesive foil (34) and connected with the integrated circuit (30) for a contactless communication with the integrated circuit (30).