42 Computer design and development; installation, maintenance, repair, updating, and design of computer software and computer programs; computer programming services; rental of computer software; customised design and creation of computer software and computer programs; information and technical advisory services relating to all the aforementioned services; development of computer software relating to computer security and prevention of computer risks; computer security consultancy; computer virus protection services; computer services, namely, on-line scanning, detecting, quarantining, and eliminating of viruses, worms, trojans, spyware, adware, malware, and unauthorized data and programs on computers and electronic devices.