With simple swipe the customer can just tell the issuer they didn't authorize the transaction and the burden is on the merchant. (money.stackexchange.com)
In addition to the ability to authorize transactions in more than 130 currencies, the company provides business analytics and information services, fraud detection and data security solutions. (en.chasepaymentech.ca)
This means that anybody who has access to your credit card number could potentially authorize a transaction without your knowledge. (gobankingrates.com)