Online shopping is very common nowadays. Here are some tips you may find useful:
1. Shop on trusted sites / apps - e.g. shop on Shopee, eBay, Amazon, etc which are established. Both buyers and sellers are protected and it is easy for you to make a report in case of being scammed. Avoid buying from forum, Facebook, etc. An authentic online store or seller will have information such as who is the owner, who manage the online store, who is the service provider, contact information, retail store physical location, etc. Evaluate sellers. As long as you don't feel confident, don't buy. Too good to be true? Don't buy.
2. Buy from trusted sellers - Always visit seller's page / profile, browse thru the store, read the terms & conditions, policies e.g. return policy, etc. The most important thing is to check feedback from buyers. You wouldn't buy anything from a seller who looks new and unknown, no review, no selling record, etc, would you?
3. Shop on websites that have SSL (Secure Sockets Layer) encryption installed to protect your information e.g. credit / debit card numbers, passwords, etc. You are able to know if a website has SSL encryption installed:
i) URL starts with https://...
ii) you can see a lock icon or badge telling you that the site is SSL encryption installed / safe.
4. Check if a number or bank account is reported / suspicious / scammer on Royal Malaysia Police website | https://ccid.rmp.gov.my/semakmule/ .
Also read:
How-To: Be More Secure Online .