An SSL/TLS certificate is needed to not show “Not secure”
If you have paid any attention at all to Internet industry news in the past year or so, you know that Google (and others) are pushing for the adoption of security certificates across the board for all websites. Technically, your website does not really NEED a security certificate unless you are doing online transactions or capturing sensitive data from your visitors. In those cases a secure site is not just recommended, it is required. However, there are a few things you might want to consider before you dismiss the idea of a secure certificate on your run-of-the-mill web presence.