Advisory services relating to computer software; computer security services (design and development of secure computer hardware, software and systems); computer software advisory services; computer software consultancy; computer software design; computer software development; computer software engineering; computer software programming services; computer support services (programming and software installation, repair and maintenance services); consultancy in the field of computer software; design and development of computer software (for others); design of computer software; development of computer software; development of computer software application solutions; development of software; diagnosis of faults in computer software; information technology (IT) services (computer hardware, software and peripherals design and technical consultancy); installation and maintenance of computer software; installation of computer software; software creation; software engineering; updating of computer software; upgrading of computer software; writing of computer software