We’ve built Fourandsix upon more than a decade of research in detecting image manipulation. Here’s a sampling of press coverage for our company, as well as coverage of co-founder Hany Farid’s groundbreaking research:


“Photoshopped or not? A tool to tell”

The New York Times, November 28, 2011

“The Dartmouth research, said Seth Matlins, a former talent agent and marketing executive, could be ‘hugely important’ as a tool for objectively measuring the degree to which photos have been altered.”


“Automating the hunt for child pornographers”

New Scientist, April 6, 2011

“More recently, Microsoft teamed up with Hany Farid, a specialist in digital imagery at Dartmouth College in Hanover, New Hampshire, to develop a system called PhotoDNA. This can scan through millions of images being stored and viewed online, flagging those that match images held in NCMEC’s database. That’s useful because child pornographers repeatedly circulate old images as well as new ones. The idea is that PhotoDNA will help companies that unknowingly host illegal material to detect and purge it - and pass information to the police for investigation.”


“Hany Farid vs. Photoshop”

Bloomberg Businessweek, December 29, 2010

“A warning to anyone trying to pass off faked photos as real: Hany Farid is on to you. The Dartmouth College computer scientist is developing digital forensics software that can instantly tell whether an image has been manipulated, and what make and model of camera captured it.”


“Can you believe your eyes in the digital world?”

BBC News, August 2, 2010

“His team uses scientific equations and mathematical algorithms to analyse photos looking for statistical anomalies in their composition.”


“Tech Watch: Solo Act”

Popular Mechanics, April 1, 2010

“Digital forensic tools have added to the evidence that Lee Harvey Oswald was a lone gunman rather than part of a conspiracy to kill President John F Kennedy.”

Related video:


“Nova | Profile: Hany Farid”

Nova Science Now, PBS, June 25, 2008

“This self-proclaimed ‘accidental scientist’ is a digital detective inventing new ways to tell if photos have been faked.”


“Proving that Seeing Shouldn't Always Be Believing”

The New York Times, October 2, 2007

“Dr. Farid, a 41-year-old engineer, is a founder of a subdiscipline within computer science: digital forensics.”

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