P30 Changing the internal and external screens to reveal personal data?

P30 Changing the internal and external screens will not reveal personal information.

Once our personal information is leaked, it will cause the following troubles: spam messages suffer greatly. Now I receive a lot more spam messages every day than in previous years. A large part of the reason is that our personal information has been leaked. Pay more attention when filling in personal information, otherwise it is easy to reveal our personal privacy information.