The Donegal entertainer had organised a charity concert in aid of cancer patient Pauric Bonner, 21 who is to get treatment in America.
Daniel announced a one-off concert at St. Crona's Church Dungloe on 29th July with all funds going to the fund.
However, Daniel’s management have now been forced to issue a warning after fraudsters tried to sell bogus tickets for the event.
The con merchants pretended to have extra tickets for the event but are then taken to a link with what is believed to be bogus tickets.
They warned that the only official tickets being sold for the event was through Daniel's niece and personal assistant Patricia Swan.
They can also be bought directly at some official outlets in Donegal.
A post on Daniel's Facebook has warned fans not to buy any tickets from a third party.
"This is a scam so please don't message them," they said.
Fans of the star have said they cannot believe that some people would stoop as low as to try and scam money from a cancer fundraiser.
“This is just the lowest of the low. I can’t believe anybody would do this.
“This young man is battling cancer and all some people can do is to try and con money out of him, cash that is needed for his treatment,” said one.
Another said “Daniel is doing his best for this young man but all some can do is try to cash in.
“I hope they have no luck at all for doing this.”
Daniel reached out to Pauric’s family as he was a school friend of the young man’s late mother Anne Theresa Bonner.
This is not the first time Daniel’s website has been targeted by scammers.
On another occasion, bogus Covid collectors pretended to be Daniel to ask for donations to fight the disease.