This troubling activity used to be restricted to dark corners of the internet and behind paywalls.

BY REUTERS

Photo: Getty Images

Julie Yukari, a musician based in Rio de Janeiro, posted a photo taken by her fiancé to the social media site X just before midnight on New Year’s Eve showing her in a red dress snuggling in bed with her black cat, Nori.

The next day, somewhere among the hundreds of likes attached to the picture, she saw notifications that........

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