Internet propagandists aligned with Russia have duped at least seven Western celebrities, including Elijah Wood and Priscilla Presley, into recording short videos to support its online information war against Ukraine, according to new security research by Microsoft.

The celebrities look like they were asked to offer words of encouragement—apparently via the Cameo app—to someone named “Vladimir” who appears to be struggling with substance abuse, Microsoft said. Instead, these messages were edited, sometimes dressed up with emojis, links and the logos of media outlets and then shared online by the Russia-aligned trolls, the company said.