HTTPS encryption is the method by which communications between your browser and the website you’re viewing are secured. If you’re banking online, using a financial based website like PayPal, or are in the checkout phase of an online store like Amazon, you’ll notice the website address starts with a bold green “https” signal, a green padlock icon which is closed, and usually the word “Secure”. This is your browser notifying you that it’s safe to transmit personal data, financial information, or your credit card number.
For some websites, the Chrome browser may display a bold red “Not Secure” phrase and a red opened or broken padlock icon before the website address if the site doesn’t use encryption and appears to request or accept the transmission of sensitive data.
To make your website secure to transfer sensitive information requires an SSL Certificate (Secured Sockets Layer). This is a certificate which provides the details of your website’s identity and your business to a trusted certificate authority. Receiving an SSL Certificate demonstrates your trustworthiness because a known, trusted resource is vouching for your website through the certificate.
Until now, most websites without an SSL have been displayed with a simple, plan, http:// prefix to the website address, with no indication of secure or not secure. However, in July 2018 Google is releasing a new version of their Chrome browser, and as part of an effort to build a safer internet, all websites without an SSL certificate will be presented with the bold red “Not Secure” phrase and a red opened or broken padlock icon before the website address.