• 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 theBlackBerry 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.
• An application uses the RIM Cryptographic API to create a private key or symmetric key.
• An application that registers with the memory cleaner application requires that memory cleaning application be turned
on.
• The BlackBerry device user installs the S/MIME Support Package for BlackBerry smartphones on the BlackBerry
device and a private key exists on the BlackBerry device.
• The BlackBerry device user installs the PGP Support Package for BlackBerry smartphones on the BlackBerry device
and a private key exists on the BlackBerry device.
If you or the BlackBerry device user turns on the memory cleaner application, Java based garbage collection process uses
the memory cleaner application automatically. The garbage collection process overwrites data that the BlackBerry device
no longer uses.
Administration Guide Configuring security options
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