Trialog has published for the PRIPARE initiative on privacy-by-design a report on security and privacy in the internet of things. This report advocates an interoperability viewpoint based on three levels: the application level, the semantic interoperability level and the object level. The rationale of the approach is that it fits better with the structure of the IoT market. The report has been submitted to ISO/IEC JTC1/SC7, and to AIOTI (http://www.aioti.org/)