Imagine visiting a website, only to be greeted by a warning that says “Not Secure” or “Your connection is not private.”
Would you continue browsing, let alone enter your personal details?
For businesses, a website security warning can create unnecessary friction, discourage potential customers and affect their confidence in your brand.
But what causes these warnings, and more importantly, how can you fix them?
What Does "Not Secure" Mean on a Website?
A “Not Secure” warning means your browser isn’t using a private, encrypted connection to communicate with a website. This usually happens when a website uses HTTP instead of HTTPS, potentially exposing information exchanged between visitors and the website.
According to Google Chrome’s security guidance, an insecure connection may allow third parties to view or modify information exchanged between your browser and the website.
Websites use HTTPS (Hypertext Transfer Protocol Secure) and SSL/TLS certificates to protect data transmitted between browsers and web servers. This helps safeguard sensitive information, such as passwords, personal details and payment information.
However, seeing a security warning doesn’t necessarily mean the website has been hacked. Issues such as expired SSL certificates or incorrect configurations can also trigger browser warnings, including “Your connection is not private.”
Want to understand how website encryption works? Read our guide on what an SSL certificate is and why your website needs one.
Why Is Your Website Showing "Not Secure"?
There are several common reasons why your website may trigger a browser security warning.
1. Your SSL Certificate Has Expired
SSL/TLS certificates have an expiry date and must be renewed to remain valid.
If your certificate expires, browsers may display a privacy warning, preventing visitors from accessing your website normally.
How to fix it: Check your certificate’s validity through your hosting provider or an SSL checker. Renew or replace it if necessary, and ensure automatic renewal is properly configured.
2. Your Website Is Still Using HTTP
Notice the difference between http:// and https://?
The extra “s” indicates that the connection uses encryption. If your website still loads over HTTP, browsers may flag it as insecure.
How to fix it: Install a valid SSL/TLS certificate and configure your website to redirect HTTP traffic to HTTPS. Remember to update internal links and website URLs accordingly.
3. Your Website Contains Mixed Content
Even with HTTPS enabled, some website resources may still load through insecure HTTP connections.
This is known as mixed content and commonly involves images, scripts, stylesheets or other embedded resources.
Depending on the resource, browsers may block it or display security-related warnings.
How to fix it: Identify insecure resources using your browser’s developer tools and update their URLs to HTTPS, ensuring those resources support secure connections.
4. Your SSL Certificate Is Incorrectly Configured
Having an SSL certificate doesn’t automatically guarantee a secure connection.
An incorrectly installed certificate, an incomplete certificate chain or a mismatch between the certificate and your domain can cause browser errors.
How to fix it: Check that your certificate covers the correct domain and is properly installed. If you’re unsure, contact your hosting provider or website developer for assistance.
How to Check If Your Website Is Secure
Not sure whether your website has an SSL issue? Here’s a quick checklist:
Visit your website using HTTPS. Check whether the page loads without a security warning.
Inspect your connection details. In Google Chrome, click the icon beside the website address to review connection information.
Check your SSL certificate. Verify its expiry date, domain coverage and validity.
Test across browsers and devices. Confirm that visitors can access your website without certificate errors.
Remember, HTTPS protects data in transit, but it doesn’t guarantee that a website is free from malware or other security vulnerabilities.
How to Prevent Website Security Issues
Fixing a security warning is one thing. Preventing it from happening again is another.
Regular website maintenance helps you stay ahead of potential problems through certificate monitoring, software updates, security checks and technical support.
If you’re running a WordPress website, you can also explore our WordPress security tips for additional ways to protect your site.
Keep Your Website Secure with WhooshPro
Your website should give visitors confidence, not a reason to leave.
At WhooshPro, we offer website maintenance and technical support services to help businesses keep their websites secure, functional and up to date.
Our maintenance clients also have access to a dedicated Client Support Portal, where they can monitor website uptime, health and SSL certificate expiry.
Experiencing website security issues or looking for ongoing support?
Explore WhooshPro’s Website Maintenance Services and discover how we can help keep your website running smoothly.
