42 Authentication, issuance and validation of digital certificates; Computer security consultancy; Computer security services in the nature of administering digital certificates; Computer services, namely, designing and implementing webpages in the nature of landing pages for others; Computer services, namely, managing web sites for others; Data security consultancy; Design, creation, hosting, maintenance of websites for others; Hosting of web sites; Hosting the web sites of others; Internet security consultancy; Technical support services, namely, installation, administration, and troubleshooting of web and database applications; Technical support services, namely, troubleshooting of computer software problems; Technical support, namely, monitoring technological functions of computer network systems; Technological consultancy services in the field of search engine optimization; Web site hosting services; Website design and development for others; Website development for others