A journal published by an organization that develops technical standards is retracting 147 papers for problematic peer review — and the publisher expects more to follow. The investigation revealed the peer review process in the special sections or issues had been compromised, each of the retraction notices says. “We have been informed that those patterns of compromised peer review could indicate a paper mill, though it’s outside of our scope of work to make that determination,” O’Reilly told us. “We’re continuing to focus on early and proactive measures, from technology to procedures, to ensure the integrity of our journal peer review process.” The journal has issued four batch retraction notices so far. In 2023, Hindawi temporarily suspended publishing special issues because of “compromised articles.” In 2024, a Springer Nature journal retracted 34 papers from special issues for “compromised editorial handling and peer review process” and that same year, Annals of Operations Research retracted an entire special issue over concerns about “compromised” peer review.