Portraits and models are not difficult to understand. Big data can find people (tags) like you by using models, algorithms and other technical means, and make recommendations intentionally and accurately. These are often better than "knowing yourself". Wechat will not actively monitor users' privacy, but it has the right to cooperate with the official team of Wechat to make it clear that the chat content does not exist on the server side, but only on the user terminal device. Wechat does not keep any users' chat records, nor does it use any users' chat content for big data analysis. It is questionable, what is the statistical expression based on which WeChat uses portraits? The data of WeChat facial expressions may be obtained according to the click frequency of different facial expressions in the expression panel, but it does not involve any specific user privacy behavior and content. After all, WeChat has always adhered to the principle of respecting and protecting users' privacy. Even some statistics have to be desensitized by technology. However, even if WeChat does not monitor user privacy, it has the right to cooperate with relevant departments for review. However, the user's privacy is always bounded, and you must never touch the user's privacy unless you need to cooperate.
Even so, information security is still worth pondering. As mentioned above, WeChat has the technical means to achieve monitoring, but it will not do that and it is not necessary. On the contrary, driven by some interests, some people try to illegally monitor the privacy of others. The means to achieve this is through some so-called commercial monitoring apps. Simply put, it is a spy-like mobile phone tracking application, which is used to track and record any operation of the target person on the mobile phone device. Such as SMS, telephone, email, WeChat chat, etc. It may all be clear at a glance. This is unreasonable and not allowed.
While worrying about the security of users' private information, we should also understand that "ability" and "existence" are always two different things. The value orientation of enterprises urges them to attach great importance to users' privacy, and does not involve the chat content between users.