Design and development of computer hardware, software and systems; hosting and back-up of webpages for others; computer programming; installation and maintenance of computer software and computer programs; rental of computer hardware and software; consultancy, advice and information relating to computer software and hardware; provision of security services for computer networks, computer access and computerised transactions; encryption, decryption and authentication of information, messages and data; technological consulting in relation to cryptography and information security; computer systems development and integration in relation to information security; technological evaluation and development of cryptographic algorithms and protocols; software development, namely design and specification of system security architectures, including security integration into applications, including X.509, and integration of cryptographic algorithms, methods and hardware.