SSL certificates: why a website shows as “Not secure”

Have you ever visited a website and had your browser tell you it's Not secure, or show you a crossed-out padlock? Or perhaps it happens on your own website. Behind it is a simple but important gap: the SSL certificate. Here's what it means and why it matters.

What is an SSL certificate?

SSL is the technology that encrypts the connection between a visitor and a website. When a site has SSL, its address starts with https and a padlock appears in the browser. In practice, the data being sent, such as passwords, messages and card details, is protected rather than travelling as plain text.

Why it says Not secure

If a website doesn't have a valid SSL certificate, modern browsers mark it as Not secure to warn visitors. For a customer, that message is like a danger sign on a shop door: many turn straight round.

Why it matters for your business

• Trust. A security warning drives customers away before they see what you offer.
• Real security. Without SSL, data entered on the website can be intercepted.
• SEO. Google prefers websites with https and may favour them in search results.
• Payments. No reputable payment processor will accept payments on a website without SSL.

How much it costs and how hard it is

The good news: SSL is neither expensive nor complicated. Many hosting providers offer free certificates, and a proper installation is done once and then renews automatically. What matters is that it's configured correctly, so you don't get mixed content errors.

Common mistakes

Sometimes a website has SSL but still shows as Not secure, because some images or resources are still loading over http. Or the certificate has expired and nobody renewed it. These come down to proper configuration and maintenance.

How we help

Every website we build or host comes with SSL configured correctly from day one, with no warnings and no headaches. If your current website shows as Not secure, we can check it and fix it. Get in touch.