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 cyber security; 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 in the nature of administering digital keys; computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; computer security services, namely, enforcing, restricting and controlling access privileges of users of computing resources for cloud, mobile or network resources based on assigned credentials; computer security services, namely, restricting unauthorized access to networking devices; computer security services, namely, restricting unauthorized network access by securing networking devices; computer security threat analysis for protecting data; authentication, issuance and validation of digital certificates; data encryption services for providing security and anonymity for electronically transmitted credit card transactions; hosting an online community website featuring shared communications between community members interested in personal and small business computer information security; maintenance of computer software relating to computer security and prevention of computer risks; providing technology information updates for home security systems via the global computer network; rental of computers relating to computer security and prevention of computer risks; updating of computer software relating to computer security and prevention of computer risks