Harvard Kennedy School's Media Manipulation Casebook independently documented the Ethiopian government's co-option of @ETFactCheck 4.5 years before ARM D5.1's Case 3 reaches the same conclusion

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ARM Project Deliverable D5.1's "Case 3" (Pohjonen, Kebede & Aalen, 2026) describes the Ethiopian government's co-option of the Twitter/X account @ETFactCheck during the Tigray war as a state-aligned "fact-checking" operation. A wholly separate investigation reached the same conclusion first: "Dueling Information Campaigns: The War Over the Narrative in Tigray," published 20 August 2021 by Claire Wilmot, Ellen Tveteraas and Alexi Drew in the Media Manipulation Casebook (Technology and Social Change Project, Harvard Kennedy School's Shorenstein Center). The two sources share no authors, sit in different venues, and the Casebook predates D5.1 by nearly four and a half years — it cannot be downstream of D5.1, and D5.1 does not cite it (D5.1's own footnote for the account cites only its own tweet and an ameco.et piece).

The Casebook traces the same handle under its original name: "On November 11, 2020, an account called the State of Emergency Fact check (SOEFactCheck) appeared on Twitter," and documents the government's own promotion of it — the government's spokesperson emailed journalists urging them to "get the latest and fact-based information on the State of Emergency and Rule of Law Operations... on the official social media accounts," with identical statements shared by the Prime Minister's office's own account. After the ceasefire, "the SOEFactCheck account name was changed to the 'current issues' fact check" — the same account D5.1's Case 3 analyzes under its later handle, @ETFactCheck. The Casebook's primary trace of government origin (the spokesperson's email, the PM office's own promotional tweet) is more direct than anything D5.1 cites for the same account.

One caveat on how multiply-sourced this finding really is: the Casebook's own footnotes partly rest on Wilmot's earlier reporting for the Washington Post and the Mail & Guardian — independent of D5.1, but not a second investigation independent of the Casebook's own lead author. The claim is corroborated against D5.1 by a genuinely separate team; it is not corroborated by three separate teams.

This bears on Schroeder et al.'s framing of "co-option of fact-checking language," and discharges, alongside claim-meta-2021-corroborates-insa-half-arm-d51, the single-source-concentration cap on D5.1. See entity-etfactcheck-ethiopia for the account's own history across both investigations.