Preventing Unauthorized Access to Secured Information Systems Using Multi-Device Authentication Techniques

A method, comprising:

• at a computing platform comprising at least one processor, memory, and a communication interface:
• receiving, by the at least one processor, via the communication interface, and from a client portal server, a request to authenticate a first user to a first user account associated with a client portal provided by the client portal server;
• identifying, by the at least one processor, a requested activity associated with the request to authenticate the first user to the first user account as a first activity;
• based on identifying the requested activity associated with the request to authenticate the first user to the first user account as the first activity, selecting, by the at least one processor, a multi-device authentication method for authenticating the first user to the first user account associated with the client portal provided by the client portal server;
• based on selecting the multi-device authentication method for authenticating the first user to the first user account associated with the client portal provided by the client portal server, generating, by the at least one processor, a first one-time passcode for a first registered device and a second one-time passcode for a second registered device;
• sending, by the at least one processor, via the communication interface, the first one-time passcode to the first registered device and the second one-time passcode to the second registered device;
• receiving, by the at least one processor, via the communication interface, and from the client portal server, first one-time passcode input;
• validating, by the at least one processor, the first one-time passcode input received from the client portal server;
• based on validating the first one-time passcode input received from the client portal server, generating, by the at least one processor, a first validation message directing the client portal server to provide the first user with access to the first user account;
• and
• sending, by the at least one processor, via the communication interface, to the client portal server, the first validation message directing the client portal server to provide the first user with access to the first user account.

One or more non-transitory computer-readable media storing instructions that, when executed by a computing platform comprising at least one processor, memory, and a communication interface, cause the computing platform to:

• receive, via the communication interface, and from a client portal server, a request to authenticate a first user to a first user account associated with a client portal provided by the client portal server;
• identify a requested activity associated with the request to authenticate the first user to the first user account as a first activity;
• based on identifying the requested activity associated with the request to authenticate the first user to the first user account as the first activity, select a multi-device authentication method for authenticating the first user to the first user account associated with the client portal provided by the client portal server;
• based on selecting the multi-device authentication method for authenticating the first user to the first user account associated with the client portal provided by the client portal server, generate a first one-time passcode for a first registered device and a second one-time passcode for a second registered device;
• send, via the communication interface, the first one-time passcode to the first registered device and the second one-time passcode to the second registered device;
• receive, via the communication interface, and from the client portal server, first one-time passcode input;
• validate the first one-time passcode input received from the client portal server;
• based on validating the first one-time passcode input received from the client portal server, generate a first validation message directing the client portal server to provide the first user with access to the first user account;
• and
• send, via the communication interface, to the client portal server, the first validation message directing the client portal server to provide the first user with access to the first user account.