Essential Website Security - Secure websites build confidence for your visitors. People notice the smallest details and very quicly form an opinion about a website. The most obvious thing is the little lock at the far left of the browser URL field. If that does not show a locked lock icon, it will show something like a triangular yield icon. And state "Not secure". You must have a "Secure Socket Layer" certificate installed so your website URL reads "https:" not "http:" and shows the lock.