Image-Recognition Technology May Not Be as Secure as We Think - Wall Street Journal

Last year, engineers at ZeroFOX, a security startup, noticed something odd about a fake social-media profile they’d found of a well-known public figure. Its profile photo had tiny white dots across the face, like a dusting of digital snow. The company’s engineers weren’t certain, but it looked like the dots were placed to trick a content filter, the kind used by social networks like Facebook to flag celebrity imitations.

They believed the photo was an example of a new kind of digital camouflage, sometimes called an adversarial...

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