GSMK CRYPTOPHONE G10i, Руководство пользователя

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7
Security Advice regarding Flash Storage
On the GSMK CryptoPhone some information, such as contacts and
SMS, is stored in Flash Storage. Flash type storage is safe against fail-
ure of the backup-battery. You must however be aware that there is
no way to securely erase information stored in flash memory in a way
that it cannot be possibly reconstructed by sophisticated methods of
computer forensics. Even if you erase the information and overwrite it
with other data, it cannot be considered safely destroyed when stored
on Flash Storage. Flash memory uses its own way of managing files that
is beyond the control of the operating system.
So files that are no longer visible after deletion in the file manager may
still exist in some unused part of the Flash memory. In addition, esoteric
physical effects (“memory burn in”) may make it possible for a forensic
intelligence laboratory to reconstruct the former content of Flash mem-
ory, even if it has been erased or overwritten once. The same problem
holds true for (mini)SD memory cards, because they are also based on
flash memory technology. We therefore recommend that any poten-
tially compromising information is not stored in Flash Storage memory
if there is a risk that the device may fall into the wrong hands.