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National Computer Security Center, A Guide to Understanding Data Remanence in Automated Information Systems (1991) (full-text).


This Guide is intended for use by personnel responsible for the secure handling of sensitive or classified automated information system memory and secondary storage media. It is important that they be aware of the retentive properties of such media, the known risks in attempting to erase and release it, and the approved security procedures that will help prevent disclosure of sensitive or classified information.