Monday, 12 December 2011

Recovering confidential data

When one deals with data recovery, sometimes he worries about the confidentially of the recovered data. Look at the example below:

...a Western Digital HD that makes clicking noises. .... The HD has many customer credit card numbers and legal documents on it, so confidentiality is very important to us.

If the automatic data recovery software works well enough, there is no problem. In this case one recovers data himself and data always stays on his own computer.

In all the other cases, for example, when a mechanical repair of disk is required, a technician has full access to a disk and that data which he is able to recover.
Any respectable data recovery company usually doesn't reject to sign either a non-disclosure agreement (NDA) or an agreement that data cannot be viewed at all during a disk repair.

The prohibition of reading data makes data recovering harder because of two reasons:

  1. Quality control becomes more difficult, and often impossible at all. Some data recovery programs provide automatic integrity control of some recovered files (e.g. in ZAR). In addition, many data recovery companies use custom-made programs for this purpose. However, not all file types can be checked without reading them.

  2. In case the data recovery fails at the first try, resetting the program for the second time becomes more complex.


On top of that data recovery companies might worry that the recovered data might be potentialy illegal.

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