Method of and system for user authentication in electronic service for transmission of digital objects

A server for user authentication in a service for transmission of digital objects, the server comprising a processor, the processor executing an electronic service, the electronic service for transmitting, via a communication network, digital objects from the server to a client device associated with a user, the electronic service configured to be accessed by the client device via a client application executable by the client device, the client application configured to transmit data using at least one native network protocol, the processor is configured to:

• receive from the client device, via the at least one native network protocol, a request for access to a user profile in the electronic service, the request having been generated by the client application;
• the request including user account data and at least one user behavior parameter;
• responsive to at least one user behavior parameter being different from the user behavior parameters stored in the user profile, create a digital object with an indication of a verification routine;
• create a user pseudo profile, the user pseudo profile being an abbreviated version of the user profile, the user pseudo profile including a portion of the user profile data that includes previously downloaded digital objects and the digital object with the indication of the verification routine;
• grant access to the user pseudo profile via the at least one native network protocol to the client application used for sending the request;
• the digital object with the indication of the verification routine accessible in the user pseudo profile being configured to cause the client device to perform the verification routine via at least one non-native network protocol;
• responsive to the verification routine, having been executed via the at least one non-native network protocol, rendering a positive outcome, grant access to the user profile in the electronic service for the client device.

A method of user authentication in an electronic service, the electronic service for transmitting, via a communication network, digital objects from a server to a client device associated with a user, the electronic service executable by the server and configured to be accessed by the client device via a client application executable by the client device, the client application configured to transmit data using at least one native network protocol, the native network protocol being at least one of:

• POP3, or SMTP, or IMAP, or XMPP;
• the method comprising:
• receiving, by the server from the client device, via the at least one native network protocol, a request for access to a user profile in the electronic service, the request having been generated by the client application;
• the request including user account data and at least one user behavior parameter;
• responsive to at least one user behavior parameter being different from the user behavior parameters stored in the user profile, creating a digital object with an indication of a verification routine;
• creating a user pseudo profile, the user pseudo profile being an abbreviated version of the user profile, the user pseudo profile including a portion of the user profile data that includes previously downloaded digital objects and the digital object with the indication of the verification routine;
• granting access to the user pseudo profile via the at least one native network protocol to the client application used for sending the request;
• the digital object with the indication of the verification routine accessible in the user pseudo profile being configured to cause the client device to perform the verification routine via at least one non-native network protocol;
• receiving a response to the verification routine sent via the client application through the at least one native network protocol;
• responsive to the verification routine, having been executed via the native network protocol, rendering a positive outcome, granting access to the user profile in the electronic service for the client device.