Final answer:
The statement explains that Safari's private browsing mode does not record cross-site tracker statistics, preventing the profiling of online behavior by trackers for the duration of the browsing session to enhance privacy and security.
Step-by-step explanation:
The phrase, “Safari doesn’t keep cross-site tracker statistics in private browsing,” means that when using Safari browser in the private browsing mode, the browser does not record the activities of various tracking scripts that try to monitor your browsing history across different websites. In layman's terms, a cross-site tracker is a tool used by companies to collect data about your online behavior to tailor ads and other content.
When you're in the private browsing mode, Safari aims to enhance your privacy by not keeping records that could be used to profile your internet usage. Thus, any site that tries to monitor your actions across multiple sites will not be successful in tracking you for that session. This feature is part of Safari's approach to improving user privacy and security.