Methods, systems, and computer readable media for message validation in fifth generation (5g) communications networks

A system for message validation in fifth generation (5G) communications networks, the system comprising:

• a first network node of a first network comprising:
• at least one processor;
• and
• a memory,
• wherein the first network node is configured for:
• obtaining, from at least one authentication and key agreement (AKA) procedure related message associated with a user device communicating via a second network, authentication information identifying the user device;
• storing the authentication information in a data store for validating subsequent messages;
• receiving a request message associated with the user device;
• determining, using the authentication information, that the request message is invalid;
• and
• in response to determining that the request message is invalid, performing an invalid message action.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by at least one processor of a computer cause the computer to perform steps comprising:

• at a first network node of a first network:
• obtaining, from at least one authentication and key agreement (AKA) procedure related message associated with a user device communicating via a second network, authentication information identifying the user device;
• storing the authentication information in a data store for validating subsequent messages;
• receiving a request message associated with the user device;
• determining, using the authentication information, that the request message is invalid;
• and
• in response to determining that the request message is invalid, performing an invalid message action.