Never buy over public Wi-Fi: Hackers can tap into public hot spots and steal your personal information.
Use a credit card: Credit cards offer protections that debit cards don’t.
Use a smartphone or tablet: You can get good deals on the go, but you still need to be careful — you could be putting your personal information at risk. Be especially wary of apps that want to access your personal contacts.
Don’t fall for too good to be true: If a site is offering a deal that’s too good to be true, it probably is. Also be wary of sites that demand a direct transfer of funds or won’t accept credit cards.