Detecting malware by monitoring client-side memory stacks

Abstract

Methods and systems for detecting malware by monitoring client-side memory stacks are described. A request for a payment process is received and a client-side memory stack is populated with a series of functions corresponding to the requested payment process. The execution of each function is monitored to determine whether the series of functions and an order of execution of the functions from the client-side memory stack are the same as an expected series of functions and in an expected order corresponding to the payment process. The monitoring also determines whether the number and types of parameters called by the functions are the same as the expected number and types of parameters. The monitoring further determines whether the timing of the execution of the functions is the same as an expected timing. Remedial action is performed when the any of these factors is determined to be different than what is expected.