Sediuk, who appeared to have press credentials, ran onto the red carpet and stuck his head under Ferrera's tulle Georges Hobeika gown. Ferrera looked visibly disturbed, as did co-stars Cate Blanchett and Kit Harrington. Sediuk was immediately dragged away by security, but wasn't charged with a crime.
"I don't even know what happened!" the 30-year-old actress told Vulture. "I feel something behind me, and there's this guy under my dress, and then two guys drag him away!"
"Of all of the things I prepared myself for, that was not one of them," she added.
Cannes organizers said they have since revoked his credentials.