Instagram is failing to take action when people's identities are stolen on the platform, a novelist who had a fake account set up in his name has said.
Joe Dunthorne said he "literally couldn't make contact" with the company to report the fake account.
A cyber threats expert urged Instagram and other social media platforms to do more to respond to fake accounts.
Instagram said it did its "very best to prevent users becoming victims of impersonation".
A spokeswoman for Meta, the parent company of Instagram, added: "The safety of our community is important to us and it is against our rules for accounts to impersonate someone else.
"We do our very best to prevent users becoming victims of impersonation and the posts in question have been removed from the profile."
By BBC News.
