Yes, it sets cookies in the following two cases. Visitor ID Cookie A cookie with the name nrid is used to identify uniquely each visitor. The value of the cookie has a unique ID for each visitor Does not exchange information with other cookies Does not transmit any data to a third party app This cookie is only created if any of the following requirements are met: The Statistics option is enabled The Limit Impressions option is enabled The Viewed Another Box Assignment is enabled Close Event Cookie A cookie in the form engagebox_ID is set every time a box is closed. Typically is used by the extension to decide if a box should stay hidden. This affects boxes that have the "After Close Stay Hidden" option enabled. Visitor Persistent & Session Cookies Two cookies named tvp and tvs are used by EngageBox when the Condition New/Returning Visitor is used in order to identify whether the user is new or returning. No personal information such as IP address, User Agent string or the Joomla! User ID is stored in any cookie case.