Abstract: A system, computer program product and method of selecting sectors of a disk on which to perform a virus scan are provided. Initially, all data in all sectors of a disk is scanned for viruses. After the initial scan each sector into which new or modified data is written is recorded. This allows only new or modified data that has been added to the disk since a preceding scan to be scanned for viruses at a succeeding scan.

Abstract: The present invention is directed to a method and system of allowing the user-defined code to be written in such a way as to be independent on the underlying transport yet still send and receive information via transport-specific artifacts. As such, a user may not be required to develop unique code for each different transport. A developer may set user-defined transport-agnostic properties and associated values without concerning an underlying transport. A deployer will provide an external mapping of those user-defined transport-agnostic properties to one or more specific transports which are to be supported. The system may allow new or different transports to be supported by the user-defined code without requiring the developer to change the user-defined code. Only the mapping information decoupled from the user-defined properties may need to be changed for different transports.