1. A machine-implemented process for screening data for malware, the process being performed by a computer system having processing circuitry operatively coupled to at least one data store, the process comprising: storing received data in the at least one data store, wherein the received data includes at least: (i) a first protected item of data containing contents that are generally inaccessible without specific access credential information, and (ii) specific access credential information corresponding to the first protected item of data; analyzing the received data to detect any protected items of data therein based on predetermined protected data item identification criteria; analyzing the received data to detect any access credential information contained therein based on predetermined access credential identification criteria; in response to a detection of the specific access credential information in the at least one data store, storing the specific access credential information in the at least one data store in a grouping arrangement with other access credential information; in response to a detection of the first protected item of data, using the specific access credential information stored in the grouping arrangement to facilitate access to the first protected item of data by a malware screening process to extract its content; and executing the malware screening process to scan the content extracted from the first protected data item to detect a presence of malware.