Pass 1: Overwrite all addressable locations with binary zeroes.This process only applies to Hard Disk Drives (HDD) and requires overwriting hard disk drives with patterns of ones and zeros in three secure overwriting passes and verification at the end of the final pass. It has become the most common, readily available, and minimum level of data-destruction, serving as the “standard” for any data-erasure process.³ The DoD 5220.22 method for data erasure first appeared in 1995 - long before the widespread usage of smartphones, tablets, and flashed-based storage technology. What is the DoD 5220.22-M standard for data destruction? Let’s take a look at each of these methods and why they matter in today’s mobile device policies and procedures. Two of the most rigorous methods of data destruction are the United States Department of Defense (DoD) standards and the National Institute for Standards and Technology (NIST) Guidelines for media sanitation. There are many precautions organizations can take to mitigate the likelihood of a data breach, but one of the most critical steps is ensuring the proper destruction of valuable company data from retired corporate-issued devices. In 2020, there were 3,950 confirmed data breaches.⁵ Every 39 seconds, a hacker attacks an individual or organization.⁴
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