A user at a computing device interacts with a networked site so that the user can log in thereto. The site receives a selection to log in and in response downloads at least one replacing driver for bypassing a corresponding driver operating on the computing device that may possibly copy log-in data including authentication credentials as entered by the user. Each replacing driver is loaded into an operating system of the computing device so as to bypass the corresponding possibly copying driver and be employed in the operating system rather than such corresponding bypassed driver. The site then delivers a log-in screen to a presentation application of the computing device after each replacing driver has been loaded. The presentation application displays the log-in screen and the user enters the log-in data thereinto. Accordingly, each non-trusted and bypassed driver is unable to copy the entered log-in data.