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MediaWiki extensions manual

MediaModeration Release status: stable
Implementation	Database
Description	Service for detecting possible child exploitation content
Author(s)	Trust and Safety Product Team
Maintainer(s)	Trust and Safety Product Team
Latest version	2.0.0
Compatibility policy	Snapshots releases along with MediaWiki. Master is not backward compatible.
PHP	7.4+
Database changes	Yes
Virtual domain	virtual-mediamoderation
Tables mediamoderation_scan
Parameters $wgMediaModerationPhotoDNAUrl $wgMediaModerationPhotoDNAMockServiceFiles $wgMediaModerationPhotoDNASubscriptionKey $wgMediaModerationThumborRequestTimeout $wgMediaModerationDeveloperMode $wgMediaModerationAddToScanTableOnUpload $wgMediaModerationRecipientList $wgMediaModerationThumbnailWidth $wgMediaModerationThumbnailMinimumSize $wgMediaModerationFrom $wgMediaModerationHttpProxy
Hooks used LoadExtensionSchemaUpdates UploadComplete
Licence	GNU General Public License 2.0 or later
Download	Download extension Git [?]: Browse repository (GitHub) Gerrit code review Git commit log Download source tarball README.md
Translate the MediaModeration extension if it is available at translatewiki.net
Issues	Open tasks · Report a bug

The MediaModeration extension is for detecting possible child exploitation content.

The purpose of the extension is to improve the Foundation’s existing workflows for child protection content.

Prior to deployment of this extension, when the Foundation receives a report of images that depict child sexual abuse, the images are deleted from the projects and reported to law enforcement according to legal requirements. This setup requires volunteers, who unlike staff have no professional training or mental health support, to initially deal with this very emotionally taxing content.

This extension aims to protect the community from being exposed to such content in nearly all cases and get it off the platform a lot faster. It would check images against a database of hashed, known images of child sexual abuse and notify Foundation staff of hash matches to allow Foundation staff to remove the images and report their existence to law enforcement.

This extension does not automatically remove any content without human review by Foundation staff.

MediaModeration provides the following:

• Check uploaded image against PhotoDNA
• Send email to pre-configured recipients if suspicious content found

Before installation, the PhotoDNA subscription key should be obtained from Microsoft.

• Download and move the extracted MediaModeration folder to your extensions/ directory.
  Developers and code contributors should install the extension from Git instead, using:

  cd extensions/
  git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/MediaModeration
  

• Add the following code at the bottom of your LocalSettings.php file:

  wfLoadExtension( 'MediaModeration' );
  

• Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

This extension is being used on one or more Wikimedia projects. This probably means that the extension is stable and works well enough to be used by such high-traffic websites. Look for this extension's name in Wikimedia's CommonSettings.php and InitialiseSettings.php configuration files to see where it's installed. A full list of the extensions installed on a particular wiki can be seen on the wiki's Special:Version page.

This extension is included in the following wiki farms/hosts and/or packages: Miraheze

• Stable extensions
• Database extensions
• LoadExtensionSchemaUpdates extensions
• UploadComplete extensions
• GPL licensed extensions
• Extensions in Wikimedia version control
• All extensions
• Extensions used on Wikimedia
• Extensions included in Miraheze

• Extensions without an image
• Extensions with release branches compatibility policy