Apple admits that it sends some user IP addresses to Tencent in the “About Safari & Privacy” section of its Safari settings which can be accessed on an iOS device by opening the Settings app and then selecting “Safari > About Privacy & Security.” Under the title “Fraudulent Website Warning,” Apple says:
“Before visiting a website, Safari may send information calculated from the website address to Google Safe Browsing and Tencent Safe Browsing to check if the website is fraudulent. These safe browsing providers may also log your IP address.”
The “Fraudulent Website Warning” setting is toggled on by default which means that unless iPhone or iPad users dive two levels deep into their settings and toggle it off, their IP addresses may be logged by Tencent or Google when they use the Safari browser. However, doing this makes browsing sessions less secure and leaves users vulnerable to accessing fraudulent websites.
Even if people install a third-party browser on their iOS device, viewing web pages inside apps still opens them in an integrated form of Safari called Safari View Controller instead of the third-party browser. Tapping links inside apps also opens them in Safari rather than a third-party browser. These behaviors that force people back into Safari make it difficult for people to avoid the Safari browser completely when using an iPhone or iPad.