Sentry K350 hardware encrypted USB flash drive - User Guide
Self Destruct
Available for ADMIN
The self destruct action helps prevent brute force attacks by triggering when an individual inputs
an incorrect password too many times. This feature allows the administrator to set a threshold
of incorrect password attempts for the K350 before the self destruct occurs. The administrator
can also configure the self destruct to destroy the data, encryption keys, and settings OR destroy
the device (and data) when the defined number of allowed password attempts is reached. The
default number of allowed password attempts is 10 and can be increased up to 50 but not lower
than 10. When enabling the feature, there are two types of self destruct options to select. Please
refer to the below table for more details.
NOTE:
Incorrect password attempts from both users and administrators are calculated cumula-
tively towards the incorrect password attempts self destruct counter. The counter will reset upon a
correct password attempt.
A. Destroy Data
(default selection) - Your device is wiped completely and all device data, encryp-
tion keys, passwords are destroyed and cannot be recovered. The device needs to go through
the initialization process again.
B. Destroy Device
- Your device is killed completely and all device data, encryption keys, pass-
words are destroyed and cannot be recovered. The device CANNOT be initialized again, the
destruction is permanent.
Deleted asset
A.Destroy Data
(default)
B.Destroy Device
Administrator Password
Deleted
Deleted and K350 destroyed
User Password
Deleted and Disabled
Deleted and K350 destroyed
Configuration by administrator (menus)
Kept
Deleted and K350 destroyed
1. In the Configuration menu select Self Destruct, confirm with Enter-button.
2. Select CHANGE or CANCEL to change the maximum allowed incorrect password entries, the
default is 10.
3. Confirm with Enter-button.
4. Enter the number of attempts you want, between 10-50. Confirm with Enter-button.
5. Select the destruction target, DATA or DEVICE, confirm with Enter-button.
6. The device goes back to the Configuration Menu after confirmation.
Brute-Force Self-Destruct Sequence
The message “Incorrect Password”, along with the current incorrect password count, will scroll
across the screen each time an incorrect password attempt is made. Press
Enter-button
to display
device information or press any other button to return to the password entry screen.
After each 5 consecutive incorrect password attempts, the device will power off. Pressing the
Power
button will allow the user to continue entering passwords.
Provided a limit of attempts that is set to 10, after 7 and 8 consecutive incorrect password attempts,
the message “Brute Force detected! All data will be deleted.” will scroll across the screen. After
the 9th attempt, the message “Self Destruct will begin with next failed login” will scroll across the
screen.
Once the 10th consecutive incorrect password attempt has been made, the device will display
“Hack detected. All data has been deleted.” The device will then power off by pressing any
button. At this stage either the data and/or device has been destructed. If the data is the target
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