Nova Scotia woman says duct cleaners showed her an "after" photo of work she found undone; examiners for Global News found an AI watermark on it
A woman in Dartmouth, Nova Scotia, told Global News that a duct-cleaning crew she booked through a Facebook Marketplace advert came to her home on 9 October 2026, showed her a phone photo of a dirty furnace motor, raised the price to $300 and then showed her a photo of a motor that looked almost new as proof the job was done. When she checked after the crew left, she says, the motor was still dirty. An AI researcher at the University at Buffalo and two students, examining the photos for Global News, found a Google SynthID watermark on the clean-motor photo; the researcher said the AI detector Sightengine gave it a 99 per cent AI score and called the result their strongest evidence that the image may come from AI. She says the company denied wrongdoing and refunded her only after repeated complaints; Halifax police told her it was a civil matter.
AI involvement suspected · Causal attribution alleged · 1 source · Added 24/10/2026