Answer:
maybe blockchain can help them in term of security
<u>Object-oriented programming</u> is a programming paradigm based on the concept of "objects", which can contain data, in the form of fields, and code, in the form of procedures. A feature of objects is an object's procedures that can access and often modify the data fields of the object with which they are associated.
A private connection through a private network
The answer to the question above is ntuser.dat. This is actually a registry file that contains the registry information of the user or account. According to Windows, this is known to be as the <span>"central hierarchical database" as this contains relevant information of the user such as profiles, and both of its hardware and software.</span>