Here’s how you can check – it’s not a foolproof way to avoid getting scammed, but it's a good first step.
The next time you're shopping online, be sure to check the address bar in the upper left side of the web page. Take a look at the URL of the page. Is it an HTTP or HTTPS? HTTPS means any information you enter into the site (e.g. username and password, financial or credit card details) will be encrypted and protected from interception or eavesdropping by malicious parties.
Some phishing sites can still get around this though, so it's not a foolproof way of avoiding getting scammed, but it's a good first step. If it's not HTTPS, your information isn't safe. #StaySmart
Source: www.globalsign.com