Working Group 1 (WG1) is a committee tasked with generating interpretation documents for Common Criteria certification (ISO 15408) of Security IC products (Smartcard and similar devices). WG1 is an initiative and legal entity of Eurosmart and is affiliated with the Joint Interpretation Library Working Group (JILWG) and SOG-IS.

WG1 is tasked with supporting the interpretation of the Common Criteria, with respect to Security IC domain (both HW and SW) security certifications. WG1 outputs documentation to enable ease of use of the Common Criteria for its members, to ensure certifications are optimized, clear, and concise. To also ensure that CC certifications are executed using the same criteria and analysis techniques across the Security IC certification domain.