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Today, the DoD 522.22-M “standard” is often superseded by other data sanitization standards, such as NIST 800-88 Clear and NIST 800 88 Purge. Most data sanitization software supports multiple data sanitization methods, including DoD 5220.22-M. The DoD 5220.22-M sanitization method is one of the most common sanitization methods used in data destruction software. The latest version of “standard,” last updated in 2007, no longer specifies an overwriting pattern.

It runs the DoD 5220.22-M twice, with an extra pass (DoD 5220.22-M (C) Standard) sandwiched in between. Pass 3: Overwrite all addressable locations with a random bit patternĮrasing a hard drive using the DoD 5220.22-M data sanitization method will prevent all software-based file recovery methods from recovering data from the drive, as well as hardware-based recovery methods.Ī 2001 DoD memo specified additional overwriting methods that have somehow become adopted as part of the “standard.” The DoD 5220.22-M ECE method is an extended (7-pass) version of the DoD 5220.22-M.Pass 2: Overwrite all addressable locations with binary ones (the compliment of the above).Pass 1: Overwrite all addressable locations with binary zeroes.The DoD 5220.22-M data sanitization method is usually implemented in the following way: The process requires three secure overwriting passes and verification at the end of the final pass. The standard which was published in the National Industrial Security Program’s Operating Manual in 1995, specifies a process overwriting hard drives with patterns of ones and zeros. The DoD 5220.22-M “standard” for data erasure from hard drives first appeared in the early days of the still-evolving data sanitization industry. At a minimum, such applications will prevent the data from being retrieved through standard data recovery methods.

Though the simplest overwrite techniques write the same data everywhere, often just a pattern of all zeros, the DoD standard and others like it take overwriting a step further with prescribed random overwriting methods. But what does this standard actually mean for ITADs, organizations and data sanitization solution providers? The “compliant with the DoD standard” is a term often used in the data sanitization industry. What Does the DoD Really Say About Hard Disk Destruction?