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Content Disarm & Reconstruction
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<h2 id="applications">Applications</h2> <p>CDR works by processing all incoming files of an enterprise network, deconstructing them, and removing the elements that do not match the file type's standards or set policies.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> CDR technology then rebuilds the files into clean versions that can be sent on to end users as intended.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p><p>Because CDR removes all potentially malicious code, it can be effective against <a href="/facts/Zero-day_(computing)/B1jJkD0C">zero-day</a> vulnerabilities that rely on being an unknown threat that other security technologies would need to patch against to maintain protection. </p><p>CDR can be used to prevent cyber threats from variety of sources: </p> <ul><li>Email</li> <li>Data Diodes</li> <li>Web Browsers</li> <li>Endpoints</li> <li>File Servers</li> <li>FTP</li> <li>Cloud email or webmail programs</li> <li>SMB/CIFS</li> <li>Removable media scanning (CDR Kiosk)</li></ul> <p>CDR can be applied to a variety of file formats including: </p> <ul><li>Images</li> <li>Office documents</li> <li>PDF</li> <li>Audio/video file formats</li> <li>Archives</li> <li>HTML</li></ul> <h2 id="open-source-implementations">Open source implementations</h2> <ul><li>DocBleach<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a></li> <li>ExeFilter<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a></li></ul> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Advanced_persistent_threat/cc8jXB2F">Advanced persistent threat</a></li> <li><a href="/facts/Computer_security/7E5dIy7G">Computer security</a></li> <li><a href="/facts/Threat_(computer)/5RHTbSac">Cyber threats</a></li> <li><a href="/facts/Deep_content_inspection/ot7R4TNz">Deep Content Inspection</a></li> <li><a href="/facts/Internet_security/LeTm8Wx4">Internet security</a></li> <li><a href="/facts/Content_Threat_Removal/wwoA0Dub">Content Threat Removal</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Santarcangelo, Michael (April 25, 2016). "Why better security prevention that doesn't rely on detection is possible". CSO Online. Retrieved August 16, 2016. <a href="http://www.csoonline.com/article/3061220/leadership-management/why-better-security-prevention-that-doesn-t-rely-on-detection-is-possible.html" target="_blank">http://www.csoonline.com/article/3061220/leadership-management/why-better-security-prevention-that-doesn-t-rely-on-detection-is-possible.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Zaw, Nyan Tun; Soh, Ken (2021-08-18). "Why is CDR / CDNR so important?". Retrieved 18 August 2021. <a href="https://athenadynamics.com/why-is-cdr-cdnr-so-important/" target="_blank">https://athenadynamics.com/why-is-cdr-cdnr-so-important/</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"Why Today's Phishing Attacks are Harder to Detect and How Proofpoint Can Help" (PDF). Proofpoint. Retrieved August 16, 2016. <a href="https://www.gartner.com/imagesrv/media-products/pdf/proofpoint/proofpoint-1-32WKFK7.pdf" target="_blank">https://www.gartner.com/imagesrv/media-products/pdf/proofpoint/proofpoint-1-32WKFK7.pdf</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Yeroslav, Yakov (2018-07-11). "File-Based Malware: Considering A Different And Specific Security Approach". Retrieved 9 October 2018. <a href="https://www.informationsecuritybuzz.com/articles/file-based-malware-considering-a-different-and-specific-security-approach/" target="_blank">https://www.informationsecuritybuzz.com/articles/file-based-malware-considering-a-different-and-specific-security-approach/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"DocBleach". GitHub. Retrieved 2019-05-30. <a href="https://github.com/docbleach/DocBleach/wiki/" target="_blank">https://github.com/docbleach/DocBleach/wiki/</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"ExeFilter". decalage.info. Retrieved 2019-05-30. <a href="https://www.decalage.info/exefilter" target="_blank">https://www.decalage.info/exefilter</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> </ol>