Tesco customers have been receiving scam texts ‘congratulating’ them while quoting their car number plates.
A number of customers have complained about getting text messages that told them they needed to click on a hyperlink to confirm their winnings.
The scheme is believed to lead members of the public into giving up personal details that could be used to steal money.
Tesco has since set up an email account to deal with scam messages.
The Tesco spokesperson said: “Thanks for letting us know about this. I can confirm this is a scam and our phishing team are aware and currently investigating.
“Our customers’ security is extremely important to us and I’d like to assure you that we would never send any of our customers a message which asks them to input any personal or security details.
“Please send this in an email to firstname.lastname@example.org and delete the message without clicking on any links and we thank you for your patience while we look into this.”