Blackberry PRD-10459-016 Administration Guide - Page 62

Administration Guide When a BlackBerry device overwrites data in the BlackBerry device memory 4. In the External services turned on drop-down list, click No. 5. Click Save All. 6. Restart the BlackBerry Enterprise Server. Related topics Restarting BlackBerry Enterprise Server components, 330 When a BlackBerry device overwrites data in the BlackBerry device memory A BlackBerry® device continually runs the memory cleaner application during the Java® based garbage collection process to overwrite data in the BlackBerry device memory that the BlackBerry device no longer uses. The BlackBerry device runs the garbage collection process when any of the following conditions exist: • You or a BlackBerry device user turns on content protection for the BlackBerry device. • An application uses the RIM® Cryptographic API to create a private key or symmetric key. • A third-party application turns on the garbage collection process by registering with the memory cleaner application on the BlackBerry device. The memory cleaner application instructs applications to empty caches and to free the BlackBerry device memory that is associated with sensitive application data that the applications no longer use. • A BlackBerry device user installs the S/MIME Support Package for BlackBerry® smartphones on the BlackBerry device. • A BlackBerry device user installs the PGP® Support Package for BlackBerry® smartphones on the BlackBerry device. When the BlackBerry device runs the garbage collection process, the garbage collection process overwrites the data that the BlackBerry device no longer uses with zeroes, periodically runs the memory cleaner application, and overwrites the memory that the memory cleaner application frees. Changing when a BlackBerry device cleans the BlackBerry device memory By default, the memory cleaner application runs on a BlackBerry® device when the BlackBerry device is inactive for a specified period of time. You or a BlackBerry device user can change when the memory cleaner application runs when any the following conditions exist: • The BlackBerry device user synchronizes the BlackBerry device with a computer. • The BlackBerry device user locks the BlackBerry device. • The BlackBerry device locks after it is inactive for a specified period of time. • The BlackBerry device user changes the time or time zone on the BlackBerry device. To change when the memory cleaner application runs, you can use IT policies or the BlackBerry device user can turn on or turn off the memory cleaner application in the Security options on the BlackBerry device. You or the BlackBerry device user cannot turn off the memory cleaner application on the BlackBerry device if any of the following conditions exist: • You or the BlackBerry device user turns on content protection on the BlackBerry device. 60