Blackberry PlayBook Tablet 보안 기술 개요 - 페이지 31
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Security Technical Overview
Deleting data from the tablet memory
A BlackBerry PlayBook tablet user can permanently delete the following data from the BlackBerry PlayBook tablet
memory using the Security Wipe option in the Security settings on the tablet. The tablet also deletes the following
data if the user types the tablet password incorrectly more than 10 times.
•
Personal files
•
Personal videos, music, photos, and voice notes
•
Personal applications that a user downloaded and installed on the tablet
•
Personal data that is associated with personal applications on the tablet (for example, game scores, saved maps,
and the browser cache)
•
Wi-Fi profiles
•
VPN profiles
•
Tablet password
If the tablet is connected to a BlackBerry smartphone when the user uses the Security Wipe option to delete
tablet data, the tablet also deletes the following data:
•
Encrypted work data from the local cache on the tablet
•
BlackBerry Bridge work key from the tablet memory
•
Bluetooth pairing with the smartphone
•
Bluetooth key and BlackBerry Bridge pairing key from the tablet memory
Related topics
Securing tablets in your organization's environment for work use, 18
What happens to work data on the tablet when it is
connected to a smartphone that deletes all smartphone
data
When a BlackBerry smartphone that is connected to a BlackBerry PlayBook tablet deletes all smartphone data, the
smartphone deletes its copy of the BlackBerry Bridge work key and the Bluetooth connection to the tablet closes.
The tablet locks all work applications and deletes its copy of the BlackBerry Bridge work key, which is stored only
in RAM.
The tablet encrypts all work data with keys that are encrypted using the BlackBerry Bridge work key. When the
Bluetooth connection closes and the smartphone and tablet delete their copies of the BlackBerry Bridge work key,
the keys that encrypt the work data cannot be decrypted so the work data cannot be decrypted.
The smartphone is designed to delete all smartphone data from memory when any of the following events occurs:
•
The user clicks Security Wipe in the security options on the smartphone.
•
The user types the smartphone password incorrectly more times than the Set Maximum Password Attempts IT
policy rule or the password option on the smartphone permits. The default value is ten attempts.
•
The user runs the application loader tool and types the smartphone password incorrectly more times than the
Set Maximum Password Attempts IT policy rule permits.
Deleting data from the tablet memory
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