The 24-year-old actress spoke out against hacking earlier this month after a number of explicit images were stolen from her phone and posted online.
But her former boyfriend, Brad Jackson, has now confessed he is in the same business, reported Contactmusic.
The 23-year-old supermarket employee dated the Oscar-winning actress when they were both just 12 growing up in Louisville, Kentucky.
When asked about the violation of her privacy, he said, "She's the type of person who would have done a nude scene but would've wanted to make the decision on her own.
Brad - who has a degree in computer network systems - claims he's seen an image that suggests the hacker who posted Jennifer's pictures could be set to do even more damage.
"I saw a screenshot of his desktop and supposedly there's a folder of stolen videos.