NIST SP 800-88 NISTSP88-2: Sanitization Method Categories: Clear, Purge, Destroy

Apply the three NIST SP 800-88 Rev 1 sanitization method categories per Chapter 2 (Background) Section 2.5. Clear (Section 2.5.1): applies logical techniques to sanitize data in all user-addressable storage locations for protection against simple non-invasive data recovery techniques + typically applied through standard read and write commands + appropriate for media that will be re-used within an organisation with consistent access controls. Purge (Section 2.5.2): applies physical or logical techniques that render Target Data recovery infeasible using state-of-the-art laboratory techniques + appropriate for media leaving organisational control such as transfer + donation + or resale + methods include cryptographic erase + degaussing (magnetic only) + overwrite with multiple patterns (specific drive capabilities) + ATA Secure Erase + ATA Sanitize. Destroy (Section 2.5.3): renders Target Data recovery infeasible using state-of-the-art laboratory techniques AND renders the media unable to be re-used + methods include disintegration + pulverization + melting + incineration + shredding to required particle size + appropriate for highest sensitivity or end-of-life. Decision between Clear + Purge + Destroy per Section 4.5 considers security categorization + intended disposition + cost + sustainability + verification capability.