Data processing apparatus; recorded computer operating system programs; recorded computer programs; software (recorded programs); computer platforms in the form of recorded or downloadable software; downloadable computer software applications; interfaces (for computers).

User-authentication services by means of blockchain technology; User-authentication services using single sign-on technology for online software applications; user-authentication services using technology for e-commerce transactions; consultation with respect to computer security; information technology consultancy services; consultant services with respect to data security; advice regarding information technology; consultant services relating to Internet security; security consultant services for telecommunications networks; monitoring of computer systems for the detection of unauthorized access or data protection breaches.