What about Apple tracking user data? It's terrible to leak data while users are sleeping. According to Zhongguancun Online News: according to the Washington Post, the reporter of the newspaper found from an ongoing privacy experiment that when allowing background applications to refresh, some IOS applications will use this function to regularly send data to tracking companies.
Although it is not surprising that some applications use trackers and share user data, the frequency of sending data using the background refresh function is still surprising.
These apps will send information such as mobile phone number, email address, geographic location and IP address, including Microsoft onedrive, mint, Nike, spotify, the weather channel, doordash, yelp, citizen and even the Washington Post's own IOS apps. Among them, the personally identifiable information shared by citizen violated its privacy policy, and yelp sent the information every five minutes, but the company later said it was a bug.
During the week-long test, 5400 trackers were found, most of which are in the application. Disconnect revealed that these trackers may send 1.5GB of data in a month.
However, not all data collection is malicious. Some will be anonymous and deleted after a certain time. However, some trackers will collect specific user data, but do not provide a clear saving time and sharing object.
Users who do not want to be collected can turn off the automatic refresh function of the background application, or use some VPN software to limit the automatic refresh behavior of the app in the background.