Image via: pxhere.com
As Business Insider journalists found out, in the stores of Apple and Google you can find a large number of applications that seamlessly monitor the millions of users of the popular messenger WhatsApp. According to the publication, such applications control users through a function built into the messenger that allows you to see if a person is online. As it turned out, even with access to such insignificant data, you can collect a lot of information about the habits and preferences of a huge number of people, study the statistics of their activity, and so on. At the same time, such programs do not have the ability to access user correspondence, but they can always establish at what time the user is awake and when he sleeps. In addition, there is an opportunity to establish an approximate circle of his contacts.