embedded text obscured by an embedded image.The current round of testing by the Australian Cyber Security Centre aimed to examine the same functionality previously tested but in Adobe Acrobat Pro DC 2017.įor the purposes of this publication, the definition of successful redaction was the complete removal of redacted data from every location in a PDF document’s file structure.Īs part of testing, a number of test cases were considered that represented some of the different ways that information could be stored within a PDF document. The Defence Signals Directorate (DSD) previously examined the redaction functionality in Adobe Acrobat Pro 10 in 2011 to determine if any redacted information could be recovered from PDF documents. This publication provides guidance on the efficacy of redaction facilities within Adobe Acrobat Pro DC 2017 and is intended for information technology and information security professionals within organisations looking to redact sensitive or personal information from PDF documents before releasing them into the public domain or to other third parties.
To assist in mitigating this security risk, Adobe Acrobat Pro DC 2017 provides redaction and sanitisation functionality that aims to completely remove undesirable information and other hidden information (e.g. There have been numerous cases of security breaches resulting from a failure to effectively redact sensitive or private information from documents prior to release into the public domain.
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