Money stolen after cards used at Penzance pub
More than 20 people are believed to have had money stolen from credit cards after visiting a pub in Penzance, BBC Cornwall understands.
They were all travelling to or from the Isles of Scilly. In some cases, thousands of pounds were taken.
Martyn Cripps, owner of the pub the Longboat, said he was perplexed and would like to hear from those affected.
The incidents the BBC has been told about all date from the first half of 2013.
No others have been registered in recent months, it is understood.
Amounts reported have ranged from £70 to thousands of pounds.
Nigel Young, who runs the cafe at the airport on St Mary's, said he lost about £70.
He said he noticed something was wrong when he saw payments to gambling and music download websites on his statements.
Mr Cripps said his business had the very latest anti-virus software on its computers and all information stored on a central server could only be accessed by using a password.
He added only four people had contacted the pub directly about missing money and he would like the mystery cleared up quickly so it can be proven that it was not the fault of the Longboat.
Computer experts said criminals may have broken electronically into the pub's computers and accessed financial details without anyone realising anything was happening.