Computer firewall services; Computer network services; Computer security consultancy; Computer security engineering; Computer security services (testing and risk assessment of computer networks); Computer software advisory services; Computer software consultancy; Computer support services (programming and software installation, repair and maintenance services); Computer support services (software advisory and information services); Computer system analysis; Computer security services (design and development of secure computer hardware, software and systems); Advisory services relating to computer systems design; Computer system design; Design of communication systems; Design of telecommunications installations; Information technology (IT) services (computer hardware, software and peripherals design and technical consultancy); Providing information, including online, about design and development of computer hardware and software; Provision of online non-downloadable web-based software; Provision of online non-downloadable software (application service provider); Security assessment services for computer networks; Software as a service (SaaS); Telecommunications technology consultancy; none of the above services concern maintenance management software, equipment management software, inventory and purchasing management software, after-sales service management software, industrial operation control software, diagnostics and troubleshooting software, computer systems maintenance and operation software, computer-aided maintenance management software (CMMS), building information modeling (BIM) software, time management software (TMS), geographic information system and geomatics software, building management software (BMS), supervisory control and data acquisition (SCADA) software, Internet of Things (IoT) software