Computer programming; Computer programming services to create online facilities that will provide telecommunications support; Computer services, namely, creating an on-line community for registered users to participate in discussions, get feedback from their peers, form virtual communities, and engage in social networking services in the field of mathematics, music; Computer system design; Data security consultancy; Database development services; Design and development of computer hardware and software; Design and development of virtual private network (VPN) operating software; Technological consulting in the field of cryptocurrency; Telecommunication network security consultancy