Computer services, namely, electronic data storage and data recovery services; computer security consultancy in the field of computer, network, and internet and information systems security; computer security threat analysis for protecting data; updating and maintenance of computer software relating to computer security and prevention of computer risks; computer security consultancy in the field of scanning and penetration testing of computers and networks to assess information security vulnerability; computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; computer security services, namely, restricting unauthorized network access by users without credentials; data encryption services