Online technology companies that run social media portals such as Facebook, YouTube, WhatsApp, Tweeter, LinkedIn, Instagram, Google+, Snapchat, etc. collect large amounts of data about Internet users from various websites, including mainly users of these social media portals.

Google Group collects this type of information about Internet users based on the Google web search service and other shared information services, including Google Drive, Gmail, etc.

Information on Internet users is collected, among others, by the so-called cookies installed in Internet browsers.

In addition, large Internet technology companies have the ability to combine information downloaded from various Internet sources, from various information services into one avatar, which is an electronic equivalent of a given Internet user and is built from Big Data database systems.

For the needs of these considerations, the issue of the security of classified data stored in Big Data database systems run by Internet technology companies managing social media portals should be added.

There have been frequent thefts made by cybercriminals who, from these Big Data systems, stole classified and sensitive information about hundreds of thousands or millions of users of particular social media portals.

The development of social media portals therefore generates an increased risk of theft of data on users of social media portals.

On the other hand, technological internet companies such as Google, Facebook, etc. have the ability to obtain classified, sensitive and personal information from the Internet about the users of websites, including search engines and social media portals, who use these information services.

These companies in their Big Data database systems are gradually expanding the scope of data related to Internet users and are constantly expanding the avatars mentioned above, ie electronic equivalents of individual Internet users.

Therefore, the colloquial wording was created: "If you are not on the Internet, you do not exist."

There is one more issue, namely the above-mentioned activity of Internet technology companies expanding their information resources Big Data and orz contained in these resources avatars of individual Internet users, how does this correlate with the legal protection of personal data in individual countries?

In view of the above, I am asking you to answer the following question:

Does anyone of you research the scope of information from which are built avatars of individual users of social media portals, which are created and developed in Big Data database systems managed by online technology companies running these social media portals?

Please, answer, comments. I invite you to the discussion.