AceShowbiz - Riverdale star Lili Reinhart's Twitter account has been hacked just days after she blasted cyber criminals who posted offensive messages on her boyfriend's site.

One of the items posted on the actress' microblogging site was what appeared at first to be a nude image of Lili.

A sinister message read: "Shouldn't have talked s**t about us, here's to lili fans found this masterpiece in iCloud".

The Blast sources reveal the photo was taken from a pornographic website, and was not actually a shot of the star.

Earlier this week, she blasted hackers who took control of her Riverdale co-star and boyfriend Cole Sprouse's Twitter account, attacking Disney bosses and making an explicit comment about his brother Dylan Sprouse's model girlfriend, Barbara Palvin.

Reinhart confirmed the actor was hacked, adding, "F**k people who do that, seriously".

Cole’s Twitter has been hacked BTW. Fuck people who do that, seriously.

— Lili Reinhart (@lilireinhart) August 14, 2018

Insiders believe a group of Fortnite gamers were behind the hack attacks on both accounts.

Cole, who is now back in control of his tweets, has yet to comment on the incident.