Quote Originally Posted by Chicken Balti Pie View Post
If they have not encrypted or hashed the credit card numbers, I'd be VERY surprised. That will come with massive fines that will more than likely end Ticketmaster. It is more likely they have your name and address (that's on the electoral roll anyway) and part of your credit card number. They won't be stealing your card, but you're more at risk of scammers attempting something in the future, but with a data set of half a billion ( or around 8% of the entire world population) I think you'll be fine
Personally the credit card issue doesn't overly concern me, I take note more of the issue of a hacker knowing personal details AND mobile phone number, potentially opening the door for a SIM card swap fraud. If you do banking on your mobile and you could be in real dire straits.

https://us.norton.com/blog/mobile/sim-swap-fraud

And why people don't opt out of the 'open register' electoral roll baffles me.