Abstract: In some embodiments, an electronic device is configured to transmit a first request for an account session key, receive the account session key associated with a first set of permissions corresponding to the embedded interface element and a second set of permissions corresponding to the embedded app, transmit a second request for an embedded app key, receive the embedded app key associated with a third set of permissions corresponding to the embedded app, and proxy communications between the embedded interface element and the processor server, based on the account session key associated with the first set of permissions, and between the embedded app and the processor server, based on the embedded app key associated with the third set of permissions.

Abstract: A computer-implemented method for detecting malicious code injection into checkout operations, the method including receiving a report regarding a checkout operation; determining based on the report that a checkout operation includes one or more events satisfying a first criterion; determining that a modification of customizable software code related to the checkout operation satisfies a second criterion; and responsive to the satisfaction of the first criterion and the second criterion, providing an indication of a detection of a potential malicious code injection into the checkout operation.