9
Sync Contacts and Appointments
The CryptoPhone supports in principle the synchronization of contact
and calendar entries with a computer. You need to be aware that in
theory it might be possible to attack the operating system of the Cryp-
toPhone by supplying manipulated data to your PC or exploiting un-
known problems in ActiveSync. GSMK does not recommend to sync
your CryptoPhone with a PC, especially if the PC is connected to a net-
work, for security reasons. If you have high security demands and need
to assume a very sophisticated adversary, avoid to sync your Crypto-
Phone with a PC. The CryptoPhone ships with de-activated Active Sync
functionality. You need to re-activate the sync option manually in the
CryptoPhone to use it. To initiate a sync, connect the CryptoPhone the
the computer using the enclosed USB cable. When you sync your Cryp-
toPhone with a PC, we strongly recommend to physically disconnect
the PC from any network connection as a precautionary measure.
Note: Sync over IrDa (Infrared) and Bluetooth has been deacti-
vated on the CryptoPhone as a precautionary security measure.
You may re-activate it if desired when you need to sync your
phone with a PC. The main risk is that an adversary could po-
tentially gain wireless access to your device while it is in your
pocket or just on the desk in front of you.
