O&O SafeErase 11 Product manual

O&O SafeErase 11 
Six methods of deletion

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Highest Security (35 runs)
The method that offers the highest level of security is based on a process developed by Peter Gutmann and presented in his article “Secure Deletion of Data from Magnetic and Solid-State Memory”. In this method, deleted data is overwritten by a series of 35 different deletion cycles that are executed in a random order.

High Security (7 runs)
The method for high security is based on the January 1995 'National Industrial Security Program Operating Manual' by the DoD. In this seven cycle variation (DoD 5220.22-M ECE), data is first overwritten three times with DoD 5220.22-M (E) Standards, then with a specific random value, and finally once again with DoD 5220.22-M (E).

Medium security (6 runs)
This method for medium security conforms to the standards of the German BSI as described in the “BSI IT Baseline Protection Manual”. Data is overwritten with a random value and then with this values complement. This procedure is completed with new random values three times.

Low Security (3 Cycles)
The method is based on the "National Industrial Security Program Operating Manual“, NISPOM (US DoD 5220.22-M) the DoD from January 1995. It proceeds with 3 runs (DoD 5220.22-M E): data is first overwritten with a fixed value, then with the complement of that value, and finally with a random value. The advantage lies in the speed with which this method proceeds to SafeErase data.

Lowest Security (1 run)
This method is quick, but offers very little security in the deletion of data. Using this method, data is overwritten with random values in one cycle.

Overwrite data with zeros
This method is the fastest, but offers very little security in the permanent deletion of data. The selected files will be overwritten with zeros.