In this days, peoples purchase most of things online because they dont have enough time to go to bazar, mall etc. and also if they are purchase online then good getting discounts and benefits from online. But most of important things need to do taking care that before purchase the products online is.
First of all need to shop on trusted site rather then going to search engine. Second most thing us a credit card instead of debit cards. Also note that before purchase from any website make sure to order check out area is encrypted. Mean have a SSL Also Never share your credit card details to through non secure online methods.
Also when you go to payment option screen make sure that website begin with the https and see that any padlock appears on the bottom right of the screen or not.
Also keep your computer updated and protected
check the privacy and return policy
Only share personal information which is necessary.
Check you credit card statement periodically
Use secure internet connection only