AboutThis website is just a joke. It is created for testing Google indexing, Google Custom Search and visitors behavior. Sections of the site contain all the possible combinations of digits within the number format. For instance, Visa cards numbers with CVV and PIN section contains all combinations of card number, CVV and PIN codes. It's 10^22 (100,000,000,000,000,000,000) different combinations. Of course, combination of your Visa card is here too, but it's not a leaking of private information, because nobody knows which combination is correct.
Feel free to contact us if you have any questions.