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 consultancy in the field of home and office computer systems, alarm systems, monitoring and surveillance; 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 security services in the nature of administering digital certificates; Computer security services, namely, restricting unauthorized access to home and office computer systems, alarm systems, security systems, monitoring and surveillance systems; Computer security threat analysis for protecting data; Data security consultancy; Design and development of electronic data security systems; Design and development of home security systems; Development of security systems and contingency planning for information systems; Internet security consultancy; Providing technology information updates for home security systems via the global computer network; Updating of computer software relating to computer security and prevention of computer risks