Zend certified PHP/Magento developer

Magento Site – Card Skimming

So it looks like one of our sites is targeted by card skimming when you select a payment method a new iframe is loaded which asks the users for their card details.

It quite clever in the fact if you try to load the console it disappears.

Has anyone come across something like this, could you point me in the right direction of where to start fixing the issue.

Thanks.