If you do not take care to ensure that the site you are visiting for making an online payment is technically secure, your passwords and credit card details can be compromised and a duplicate credit card bearing the same data as yours can be generated.
A typing error while entering the website address may lead you to a fraudulent website specifically created to capitalise on such errors — which is why you need to make sure the website address is correct before you initiate a transaction.
“While making payments online, using secure portals with a trust e-seal and tested payment gateways such as Paypal and CCavenue can keep tricksters at bay,” suggests Karnika Seth, partner at law firm Seth Associates.
http://economictimes.indiatimes.com/prevent-online-fraud/use-secure-portals/slideshow/3523724.cms