Advisory services relating to computer hardware; Advisory services relating to computer software; Back-up (copying) of computer data; Computer advisory services; Computer co-location services; Computer consultancy; Computer disaster recovery services; Computer firewall services; Computer network services; Computer program updating services; Computer security services (testing and risk assessment of computer networks); Computer software advisory services; Computer support services (computer hardware, software and peripherals advisory and information services); Computer support services (programming and software installation, repair and maintenance services); Information technology (IT) services (computer hardware, software and peripherals design and technical consultancy); Installation and maintenance of computer software; Monitoring of computer systems by remote access; Testing of computer installations; Testing of computers; Updating of computer programs; Updating of computer software; Updating of memory banks of computer systems; Upgrading of computer software