If you are buying anything online, you will normally be asked to provide sensitive information such as your bank account or credit card details. You should ensure that you only carry out online transactions on secure Web sites which have the prefix https://. This prefix indicates that the Web site uses the Secure Sockets Layer (SSL) protocol.
The SSL protocol guarantees secure data communication by encrypting all transmitted information. Messages transmitted using SSL cannot be intercepted and decoded en route.
When you enter a secure Web site, many Web browsers will display a message confirming that you have done so. A locked padlock icon may appear in the Address bar to help you identify a secure Web site.