Dictionary · NIST SP 800-88

To use software or hardware products to overwrite storage space on the media with nonsensitive data. This process may include overwriting not only the logical storage location of a file(s) (e.g., file allocation table) but also may include all addressable locations. See comments on Clear/Purge Convergence.

Use of sophisticated signal recovery equipment in a laboratory environment to recover information from data storage media.

A general term referring to the actions taken to render data written on media unrecoverable by both ordinary and extraordinary means.

Rendering sanitized data unrecoverable by laboratory attack methods.

An overwrite technology using firmware-based process to overwrite a hard drive. Is a drive command defined in the ANSI ATA and SCSI disk drive interface specifications, which runs inside drive hardware. It completes in about 1/8 the time of 5220 block erasure.