System and method for controlling access to secure data records in a web browsing session

A computing system, comprising:

• a processor;
• a communications module coupled to the processor;
• and
• a memory coupled to the processor, the memory storing instructions that, when executed, configure the processor to:
• obtain document data of a first web document;
• identify one or more tradeable objects based on performing a contextual scan of the document data of the first web document;
• generate supplementary display data associated with the first web document, the supplementary display data including one or more user interface elements for initiating account access actions in connection with at least one trading account associated with the one or more identified tradeable objects;
• graphically present the supplementary display data with webpage content of the first web document, wherein the graphically presenting the supplementary display data comprises displaying, for each identified tradeable object, only those user interface elements corresponding to available account actions for the tradeable object determined based on permission levels for the account actions and inputted user authentication information;
• detect user selection of a first user interface element corresponding to a first account-related action;
• determine an access control level associated with performing the first account-related action in connection with a first one of the identified tradeable objects on the first web document;
• determine that the user is logged in to a trading account and that further authentication is required for initiating performance of the first account-related action based on the access control level associated with the first account-related action in connection with the first identified tradeable object on the first web document;
• and
• responsive to successful further authentication of the user, generate a request to process performance of the first account-related action in connection with the first identified tradeable object on the first web document.