Computer consultation in the field of computer security; Computer security consultancy; Computer security consultancy in the field of scanning and penetration testing of computers and networks to assess information security vulnerability; Computer security service, namely, hard drive erasure; Computer security service, namely, restricting access to and by computer networks to and of undesired web sites, media and individuals and facilities; Computer virus protection services; Design and development of electronic data security systems; Developing and implementing customized plans for improving computer security and preventing criminal activity for businesses and governmental agencies; Development of customized software for others for use in risk assessment, information security, business analysis, audit and audit planning, and sales management; Development of security systems and contingency planning for information systems; Development of software for secure network operations; Engineering and system analysis in the field of home security systems; Maintenance of computer software relating to computer security and prevention of computer risks; Research in the field of intelligence and security technology; Testing of security systems; Updating of computer software relating to computer security and prevention of computer risks