Wikipedia left biased edits on Israel, Hamas, and Zionism pages intact despite bans, ADL finds

ByALEX CARSON
OCTOBER 15, 2026 18:04

Uncorrected previous prejudiced edits stay ingrained throughout Wikipedia’s most-read pages worrying Israel, Zionism, Hamas, and Jewish history, according to a follow-up report released by the Anti-Defamation League’s (ADL) Center for Technology and Society on Thursday.

The report, entitled Damage Done: Wikipedia Leaves Biased Edits Unchecked Despite Editor Bansfollows a preliminary examination launched in March 2025 entitled Modifying for Hatewhich recorded a collaborated project by roughly 30 bad-faith editors to control entries connected to Israel, Jewish history, and the Israeli-Palestinian dispute.

Following the release of that preliminary examination, the findings ended up being the topic of substantial external pressure, consisting of a United States. Home Committee on Oversight examination, a bipartisan congressional letter signed by 23 members, and federal questions from the Department of Justice and the Senate Commerce Committee, together with extensive media reporting and examination from Wikipedia’s own neutral-point-of-view editors.

To comprehend how editor habits and short article material have actually altered considering that their previous examination, scientists examined platform activity utilizing 5 different information collections collected in between July and August 2026. These approaches consisted of tracking whether edits made by prohibited users stay live on significant pages, comparing modifying volumes before and after the 2025 report, and evaluating countless modifications and conversation logs throughout conflict-related entries.

As part of this methodological analysis, the ADL took a look at public platform interaction records and cooperation patterns on Wikipedia. Following the extreme external analysis, noticeable coordination metrics amongst the bad-faith editors dropped dramatically. Public user-talk page messaging in between group members fell 95.41 percent from 501 down to 23, and same-page tandem modifying dropped 87.91 percent from 6,218 down to 752. Overall combined edits throughout the group reduced by 26.65 percent from 182,440 down to 133,817.

Jonathan GReenblatt, Anti-Defamation League (ADL) CEO and Wikipedia logo design. (illustrative) (credit: Canva, JEENAH MOON/REUTERS, WIKIPEDIA)

Wikipedia maintains 91 % of prohibited editor’s modifications to essential Israel-related short articles

According to the report, although Wikipedia’s Arbitration Committee topic-banned 6 editors and site-banned 3, it did not methodically examine or fix any of their work. On 6 flagship short articles, consisting of Hamas, Gaza war, Zionism, and October 7 attacks, 91 percent of previous edits made by Iskandar323, an editor recognized in the initial 2025 report who was consequently site-banned for breaking platform guidelines in the subject location, stay undamaged in the live text.

A July 2026 evaluation determined 19 active accounts forming conflict-related pages: 8 unauthorized members from the initial associate and 11 recently recognized editors. These accounts utilize subtler methods, such as gatekeeping through regular goes back that reverse neutral updates, hedging accurate claims with qualifiers to turn recorded truths into objected to viewpoints, and slowly rewording or reorganizing page areas so no single edit draws administrator attention.

To see how these active accounts form the existing material, scientists tracked who made the most current modification throughout these Wikipedia pages. Out of 229 posts touched by these accounts, recently recognized editors hold the last and present variation on approximately 6 in 10 pages 144 of 229, along with two-thirds of the pages modified by both the old and brand-new accomplices 95 of 142. Editors flagged in the report greatly reworded and handled the material on October 7 sexual violence, accounting for 832 out of 9,576 overall modifications, approximately one out of every 11 edits, throughout those particular posts and their accompanying conversation boards where challenged phrasing is actively worked out.

The report comprehensive numerous significant examples of sustaining distortion. 3 days after the October 7 attacks, on October 10, 2023, an editor transferred product worrying Hamas’s antisemitism, human guards, kid contenders, and human rights abuses into a far less-read page entitled Criticism of Hamas. At the time, the primary Hamas page drew close to one million views daily, so readers reaching the main entry no longer experienced that important product unless they browsed to the secondary post. The primary page’s lead area does not recognize Hamas as a designated terrorist company till its very end.

Wikipedia modifies eliminate information of Hamas atrocities, change Zionism short article

In November 2023, roughly 17,000 characters were eliminated from the Gaza war post, erasing forensic documents of victims bound with wire, burned bodies, and tried decapitations, followed by another cut of approximately 7,400 characters. What stays is a single line specifying that terrorists “reportedly engaged” in such violence.

A recently determined account made 543 edits to the Zionism short article, including approximately 193,000 characters and getting rid of around 188,000. The resulting lead specifies Zionism as attained “through colonization” and states as reality that Zionists looked for a state with “as few Palestinian Arabs as possible,” language Wikipedia’s own editors have actually internally flagged as contested and which was secured location after a 12-month administrative moratorium.

Following the February 2025 return of the bodies of Shiri Bibas and her young children Ariel and Kfir, an unauthorized original-cohort editor made 64 edits to their post and conversation page, holding the way of their deaths open in spite of Israeli forensic conclusions that they were killed in captivity.

Daniel Kelley, senior director of the ADL Center for Technology and Society, stated, “Even in cases where the Wikipedia community took some modicum of action against editors who went against their policies, the activities of that banned editor remain in this case activity over numerous years driving an ideological narrative in flagrant violation of the neutral point of view policy of the platform.”

“This talks to an organized problem with how Wikimedia enables their platform to run, and it is something they have the obligation to address,” Kelley included.

ADL requires Wikipedia reforms over sustaining predisposition, AI issues

ADL CEO Jonathan Greenblatt stated, “Banning individual editors was never going to be enough. The pages that millions of people read, and that AI tools learn from, still bear the marks of a systematic disinformation campaign that Wikipedia itself has sanctioned but never cleaned up.”

Greenblatt even more specified, “The most visited online encyclopedia that claims neutrality has to be willing to repair its own record. The Wikimedia Foundation should audit this work, and the companies that build search and AI products should stop presenting contested framing as settled fact.”

Since Wikipedia feeds straight into AI training pipelines, Large Language Model outputs, and online search engine results, the ADL has actually restored require structural reforms. These suggestions consist of personal identity confirmation for editors in controversial subject locations, ending confidential IP-address modifying, developing a devoted job force on antisemitic predisposition, and performing structured material audits of greatly modified posts.

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