42 Computer programming, consultancy and advisory services for others, computer system design of hardware and software; information provided on-line from a computer database or from a global computer network; creating, maintaining and hosting the web-sites of others on a computer server for a global computer network; installation and maintenance of computer software; computer security services, namely on-line security monitoring, firewall installation, monitoring and maintenance; intrusion, auditing, detection and prevention of hackers and viruses; providing computer e-commerce solutions to allow users to perform electronic business transactions via a global computer network; computer network services, namely network monitoring, network and database management, global computer network provider administration, filtering of objectionable content, screening of global computer network locations, encryption services, and network authorized recovery services of lost data