Duffy has issued a plea on social media after his daughter was targeted by hackers.
The former Boyzone singer has been left reeling after the scammers pretended to be Mia and started messaging her friends and followers.
Keith, 48, has been open in the past about how Mia was diagnosed with autism at a young age.
The Dubliner revealed her Instagram account has been taken over and appealed to people to help her out.
He wrote on social media: "Urgent to anyone who received a message from my daughter Mia's account.
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