network security services in the nature of restricting access to and by computer networks to and of undesired websites, media and individuals and facilities; Computer security services, namely, restricting unauthorized access to computer networks and individual computers on a network; Computer consultation in the field of computer security, namely providing technological recommendations and advice in the fields of Internet website, network, and computer data security; Maintaining of computer software relating to computer security and prevention of computer risks; Testing of security systems; Design and development of electronic data security systems