Bias against Israel on English Wikipedia is a known and documented phenomenon, yet its internal mechanisms often remain hidden from the broader public. This article examines the underlying mechanisms of this phenomenon through a focused analysis of the behavioral patterns of Iskandar323, a senior and experienced editor who operated on the platform for nearly twelve years before being permanently banned in early 2026 for violating prior restrictions on editing articles on the Israeli–Palestinian conflict. The study is based on mapping the scope of his activity, categorizing his primary areas of editing within the domain under examination, and conducting a qualitative content analysis of selected edits in core articles. The findings indicate a systematic pattern of knowledge poisoning that does not rely solely on the insertion of false information but rather operates through reframing, omission of context, selective organization of facts, and wording changes with broad interpretive implications. Two main axes of activity emerge from the analysis: the first involves rewriting the foundations of Jewish identity, Zionism, and the State of Israel by weakening the Jewish connection to historical sites and spaces, reframing ancient Jewish history in the Land of Israel, and undermining the right to national self-determination; the second involves shaping the narrative of the Israeli–Palestinian conflict in a manner that frames Israel within a one-sided, judgmental critical framework. The banning of Iskandar323 demonstrates that Wikipedia’s enforcement mechanisms are capable of functioning effectively. However, the fact that many of his edits remained in place even after his pattern of activity was exposed raises questions regarding the effectiveness of oversight, transparency, and accountability on the platform. It also underscores the need to consider state-level initiatives, including a formal complaint to the Wikimedia Foundation, alongside a legal examination of aspects of responsibility related to the phenomenon as a means of reducing existing harm and preventing its recurrence in the future.

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