Discover how credit card validation codes work and protect against fraud. Learn about their placement, security role, and examples to secure online transactions.

Discover how the Luhn Algorithm verifies credit card accuracy, supports secure transactions, and helps prevent errors in inputting Social Security numbers.

You can dispute credit card transactions and get your money back in some situations. Learn about the valid reasons to dispute a charge on your credit card.

Kelly-Ann Franklin has spent more than two decades in journalism which has helped her build a wide knowledge base of business and personal finance topics. Her goal with editing is to ensure tough ...

Another scary IT Blogwatch today, in which we uncover the grimy world of credit card fraud and ID theft. Not to mention bear comedy math… WaPo’s Brian Krebs has been lurking in the murky credit card ...