These performance cookies don't collect information that identifies you as an individual – all information they collect is aggregated and pseudonymous (inter alia we remove the last two octets of your IP address). We do not associate usage data collected through these cookies with personal data which you may have provided when registering for a ZF Account (e. g. your name). On the ZF Websites, we use technologies of Piwik PRO GmbH to collect and store data about your use of the ZF Websites for the purposes of optimization of the ZF Websites services and marketing. Usage profiles may be created from this data under a pseudonym using cookies. As far as this data must be considered personal data, the processing is based on statutory provisions which justify this on the ground that (1) ZF has a legitimate interest that the ZF Websites is tailored to the user’s needs; or (2) the data is used in pseudonymous form for the purpose of marketing and optimization purposes and the user has not objected to this use.
What is the lawful basis of the processing of my data? 
ZF has a legitimate interest that the ZF Websites is tailored to the user’s needs