Authentication of web content

A computer program product comprising computer readable instructions stored on a non-transitory computer readable storage medium and, when executed, configured to implement a method comprising:

• establishing a communication session between the content source and a browser executing at the local device;
• transmitting from the content source to the browser a validation page comprising a content authentication token which is a randomly generated one-time use only credential bound to the content source;
• capturing the content authentication token from the browser by a verification application;
• transmitting the authentication token to a validation service which determines whether the token is bound to a valid source of content;
• and
• causing the content to be displayed on the local device if the token is bound to a valid source of content.

A computer system comprising:

• a digital identity system configured to implement a validation service;
• and
• a local device comprising a network interface and a processor configured to execute a browser which operates to:
• establish a communication session between a content source and the browser via the network interface, and
• receive from the content source a validation page comprising a content authentication token which is a randomly generated one-time use only credential bound to the content source,
• wherein a verification application captures the content authentication token from the browser and transmits the authentication token to a validation service which determines whether the token is bound to a valid source of content;
• and
• wherein the validation service causes the content to be displayed on the local device if the token is bound to a valid source of content.