Unchecked Biased Edits Persist Across Flagship Wikipedia Pages Concerning Israel
Years of contested and biased edits remain largely uncorrected across English-language Wikipedia’s most-read pages covering Israel, Zionism, Hamas, and the October 7 attacks, according to a report published by the Anti-Defamation League (ADL) Center for Technology and Society. Titled “Damage Done: Wikipedia Leaves Biased Edits Unchecked Despite Editor Bans,” the investigation found that even after platform administrators issued bans against bad-faith contributors, a vast majority of their disputed alterations survived in the live encyclopedia text.
The report follows an initial March 2025 investigation named “Editing for Hate,” which documented a coordinated campaign by approximately 30 editors to inject anti-Israel and antisemitic narratives into the platform. While external scrutiny—including a US House Committee on Oversight investigation, a bipartisan congressional letter signed by 23 members, and federal inquiries—caused coordinated editing by bad actors to plummet by 95 percent, while tandem editing on the same articles declined by 88 percent, the encyclopedia never systematically reviewed or corrected the accumulated alterations left behind by banned accounts.
Banned Editor Iskandar323 Leaves 91 Percent of Edits Intact
Among the most prominent findings is the enduring footprint of the account Iskandar323, who was subsequently banned from Wikipedia altogether after continuing to edit in violation of an earlier topic ban. An audit of the account’s history across six flagship entries—”Israel,” “Hamas,” “Zionism,” “Jews,” “Gaza War,” and “October 7 attacks”—revealed that 346 out of 382 edits remain intact, roughly 91 percent.
ADL: WIKIPEDIA LEFT 91% OF BANNED EDITOR'S CHANGES ONLINEMore than a year after the @ADL accused a group of Wikipedia editors of coordinating to inject anti-Israel bias and antisemitic narratives into articles, the organization says Wikipedia has failed to correct much of the…
The altered framing took root during high-traffic moments. According to the ADL, three days after the October 7, 2023, attack, an editor relocated vital material detailing Hamas’s antisemitism, use of human shields, child combatants, and human rights abuses into a separate page titled “Criticism of Hamas.” This structural shift reduced the visibility of these documented abuses on the main entry, which was receiving close to one million views a day immediately following the assault.
Further reductions occurred in November 2023, when approximately 17,000 characters of text and citations were stripped from the October 7 coverage, removing evidence that victims were bound with wire and burned, alongside video documentation of an attempted decapitation. Subsequent edits left behind a single line stating that terrorists “reportedly engaged” in such violence.
New Cohort of 19 Active Accounts Reshapes Zionism and Sexual Violence Pages
A review conducted in July identified 19 active accounts shaping conflict-related pages, consisting of eight unsanctioned members from the original cohort and 11 newly identified editors. These accounts rely on subtler tactics, including frequent reverts to block neutral updates and hedging factual claims with qualifiers.
One newly identified contributor, identified by the ADL as DMH223344, made 543 edits to the Zionism article. The contributor added roughly 193,000 characters and removed about 188,000, leaving the article’s overall length largely unchanged while substantially rewriting its contents. The resulting introduction defines Zionism as achieved “through colonization” and states as fact that Zionists sought a state with “as few Palestinian Arabs as possible,” language that Wikipedia’s own editors internally flagged as disputed before administrative locks froze the debate.
Similarly, a prolonged dispute on Wikipedia’s coverage of sexual violence during the October 7 attacks involved 19 accounts responsible for 832 out of 9,576 revisions across four related articles and discussion pages. Debates centered heavily on inserting the word “reportedly” into descriptions of sexual violence, a framing that survived even when individual edits were reversed.
Frequently Asked Questions About the ADL Wikipedia Audit
What specific actions did the ADL recommend to address these persistent distortions?
The report urges the Wikimedia Foundation to conduct structured content audits of heavily edited articles, beginning with the flagship entries examined. It also recommends private identity verification for editors in contentious topic areas, ending anonymous IP-address editing, establishing a dedicated task force on antisemitic bias, and requiring search engines and AI developers to disclose when Wikipedia serves as the underlying source for an answer.
How did editing activity change after the initial 2025 investigation?
Total combined edits across the monitored group decreased by 26.65 percent, dropping from 182,440 to 133,817. Meanwhile, discussions on article talk pages fell by approximately 95 percent, and instances of editors making changes to the same articles close together in time decreased by 88 percent.
Did Wikipedia administrators take formal action against the editors involved?
Yes. Wikipedia’s Arbitration Committee topic-banned six editors and site-banned three others. However, the ADL emphasizes that removing problematic accounts did not trigger a systemic review or cleanup of the specific alterations those editors introduced into the encyclopedia text.
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