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Cold Boot / Emergency Erase • Security Advice regarding Flash Storage
Cold Boot •14•
Cold Boot / Emergency Erase
Initiating a Cold Boot is recommended in emergency situations when the
capture of the device by an adversary is imminent, to get rid of any data
stored in volatile memory that might compromise your security (like SMS,
call history, notes, appointments etc.). Cold Boot will not erase the contacts
and SMS messages stored on your SIM card. Also, a Cold Boot does not
erase any information that you may have stored in Flash (Storage) or on
SD memory cards. To initiate a Cold Boot, press the stylus into the Reset
hole while simultaneously pressing the Standby button.
(Cold Boot •14•)
Note: no key material that might compromise the security of your
past calls is stored anywhere on your device. Upon completion of a
secure call, all key material for the call is destroyed and permanently
erased. The recommendation for a Cold Boot in emergency situations
only relates to other data stored on the device like notes, contacts,
SMS, call history etc.
Security Advice regarding Flash Storage
With the GSMK CryptoPhone you have the choice to store information
in Flash Storage, if it is not disabled by the Security Profile you have
chosen. Flash type storage is safe against failure 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 methods of computer forensics. Even if you erase the
