A privacy issue was addressed with improved handling of user preferences. This issue is fixed in watchOS 10.3, iOS 17.3 and iPadOS 17.3, macOS Sonoma 14.3, iOS 16.7.5 and iPadOS 16.7.5, Safari 17.3. A user's private browsing activity may be visible in Settings.
https://support.apple.com/en-us/HT214063
https://support.apple.com/en-us/HT214061
https://support.apple.com/en-us/HT214060
https://support.apple.com/en-us/HT214059
https://support.apple.com/en-us/HT214056
http://seclists.org/fulldisclosure/2024/Jan/39
http://seclists.org/fulldisclosure/2024/Jan/36
http://seclists.org/fulldisclosure/2024/Jan/34