42 Computer security services in the nature of providing digital certificates, providing SSL certificates; authentication services for computer security; technical auditing of companies with respect to cyber security; providing BIMI (Brands Indicator for Message Identification) certificates to securely authenticate the sender of an email; services for certification of messages transmitted by telecommunication; certification of data transmitted by telecommunication; data certification by means of blockchain; testing services for the certification of quality or standards in the field of computing; consultation with respect to computer security; security services for computer networks, computer access and computer-based transactions; monitoring services for computer security systems; computer security monitoring services on the Internet; computer programming services for electronic data security; professional consulting services in the field of computer security; maintenance of software for security and prevention of computer risks; computer security services for protection against unauthorized network access; software update services related to security and computer risk prevention; securing emails; software platforms as a service [PaaS]; DNS infrastructure and hosting services, implementation, design; computer remediation service to counter cyber attacks (security services for computer networks, computer access and computerized transactions); rental, development, hosting of Internet sites and screen pages; design, rental and maintenance of computer software; programming for computers.