![]() ![]() ![]() Where computer-generated proportional fonts were used, even more information can leak out of the redacted section in the form of the exact position of nearby visible characters. The exact length of the removed text also remains recognizable, which may help in guessing plausible wordings for shorter redacted sections. For example, if the black pen or tape is not wide enough, careful examination of the resulting photocopy may still reveal partial information about the text, such as the difference between short and tall letters. This is a simple process with only minor security risks. Alternatively opaque "cover up tape" or "redaction tape", opaque, removable adhesive tape in various widths, may be applied before photocopying. Redacting confidential material from a paper document before its public release involves overwriting portions of text with a wide black pen, followed by photocopying the result-the obscured text may be recoverable from the original. Secure document redaction techniques Ī heavily redacted page from a 2004 lawsuit filed by the ACLU - American Civil Liberties Union v. In the context of government documents, redaction (also called sanitization) generally refers more specifically to the process of removing sensitive or classified information from a document prior to its publication, during declassification. Originally, the term sanitization was applied to printed documents it has since been extended to apply to computer files and the problem of data remanence. When the intent is privacy protection, it is often called data anonymization. When the intent is secrecy protection, such as in dealing with classified information, redaction attempts to reduce the document's classification level, possibly yielding an unclassified document. Typically, the result is a document that is suitable for publication or for dissemination to others rather than the intended audience of the original document. It is intended to allow the selective disclosure of information. Redaction or sanitization is the process of removing sensitive information from a document so that it may be distributed to a broader audience. For other uses, see Redaction (disambiguation). ![]()
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