With a market share of over 40%, WordPress is the most popular CMS behind many business websites. Of course, this popularity makes it even more interesting and attractive for hackers and malicious attacks, which can easily damage your audience’s trust, leaving you stuck with low traffic and declining sales.
When people talk about security, they usually mention a specific term that can be said to have very little in common with securing a WordPress site, and I’m talking about SSL certificates.
The misconception is based on a misguided idea of how these SSL certificates work and their relevance to security.
Security in general, and WordPress site security, in particular, should not be taken for granted, no matter how large or famous your site is. The truth is that there are many ways you can take to strengthen your site’s security.
In this article, we will explain some important details in the context of SSL certificates and leave aside the technical aspects and the less clear language that generally accompanies this topic.
SSL Certificates and Security – Are These Terms Related?
SSL certificate, or its full name Secure Socket Layer, is a simple and not very expensive way to protect sensitive information shared between websites from attacks by hackers.
I say from the beginning that having an SSL certificate is not enough (to put it mildly) to improve your site’s security. Therefore, there are tactics, tools, and security measures that you should take to strengthen your site’s overall security.
What is an SSL Certificate?
An SSL certificate is a public digital document. When a user types your site’s URL in the browser’s address bar, the SSL certificate indicates to them that the site belongs to a legitimate company.
Technically, SSL (Secure Socket Layer) has been deprecated and replaced by TLS (Transport Layer Security). Modern websites use TLS 1.2 or TLS 1.3, but the industry still commonly refers to these certificates as “SSL certificates.” When you see “SSL” in this post, the underlying technology is actually TLS.
An SSL certificate is an efficient and quick way to ensure that the site served to you is indeed the site you are trying to browse.
Attackers can “snatch” your domain (website address) and redirect traffic to malicious or fake sites that steal your customers’ money, identity, and other information.
An SSL certificate allows users to verify their identity and ensure that your WordPress site, where they are browsing, is secure, including their private information.
How Does an SSL Certificate Enhance User Security?
An SSL certificate improves the security level of WordPress and site visitors in two ways. On the one hand, since the SSL certificate prevents connection or redirection to fraudulent sites, visitors to your site can be sure that nothing suspicious is happening.
On the other hand, an SSL certificate will keep the same sensitive information secure through encryption, and in this way, the same encryption ensures that the information passing between the user’s browser and the server of your site is understood only by both parties.
If we become more specific, an SSL certificate secures the information when it passes between the browser and the server in three steps:
- The user enters the URL in the browser. The browser asks the relevant server to identify itself before approving the connection.
- The requested server sends the SSL certificate to the browser.
- The browser verifies that the certificate is authentic and valid and is not expired. The connection is approved…
For example, when you buy something on Amazon, the credit card information you provide is sent securely and encrypted to Amazon’s servers.
If an attacker manages to intercept the information, they will not be able to read it without the unique encryption key used to protect that sensitive data.
Have you ever encountered the following message?
Messages like this occur when the browser encounters a suspicious or attacked SSL certificate. In this case, users will receive a warning not to enter personal information on these sites that are not authentic (or at least cannot be verified as such) to minimize the risk of identity theft or information theft.
Do I Need an SSL Certificate?
The short answer is yes. In 2026, an SSL certificate is no longer optional – it is a baseline requirement for any website.
Here are the main reasons you need an SSL certificate:
- An SSL certificate is a simple way to protect your customers’ data during transmission.
- Google has confirmed HTTPS as a ranking signal since 2014, and sites without SSL may rank lower in search results.
- A valid SSL certificate and the padlock icon in the browser show your users that they can trust you and your site.
- Since 2018, Google Chrome and other major browsers mark all HTTP pages as “Not Secure”, which can drive visitors away.
Additionally, an SSL certificate and moving to HTTPS allows you to use the HTTP/2 protocol, which brings significant advantages in terms of speed and the loading time of your WordPress site.
Types of SSL Certificates
Not all SSL certificates are the same. There are three main validation levels:
- Domain Validated (DV) – Verifies only that you own the domain. This is the most common type, and it is what Let’s Encrypt provides for free. Sufficient for the vast majority of websites and blogs.
- Organization Validated (OV) – Verifies both domain ownership and basic organization details. Suitable for business websites that want an extra layer of trust.
- Extended Validation (EV) – Requires a thorough vetting process to verify the legal entity behind the domain. Typically used by financial institutions and large eCommerce stores.
For most WordPress sites, a DV certificate is more than enough.
How to Obtain an SSL Certificate?
There are several ways to obtain an SSL certificate, but for many websites, I recommend using Let’s Encrypt. It is a free, automated certificate authority that issues DV certificates at no cost.
Most hosting companies support Let’s Encrypt as part of their services (often with automatic renewal), so you can seek help from your hosting company’s support. Let’s Encrypt certificates renew automatically every 90 days, so once set up, you typically don’t need to worry about them expiring.
But if your hosting company does not offer support or if you have a complex site, such as a Membership site or a WooCommerce store, consider hiring a professional who will purchase a higher-level SSL certificate and install it for you.
Beyond the installation of the SSL certificate, there is a process of transitioning to HTTPS that needs to be done. An SSL certificate without completing this process is not worth anything.
A common issue during HTTPS migration is mixed content, where your pages load over HTTPS but still reference images, scripts, or stylesheets via HTTP. This triggers browser warnings and can break the padlock indicator. Make sure all internal URLs use HTTPS after the migration.
You are welcome to take a look at the guide I wrote on migrating a WordPress site to HTTPS if you are interested in doing it yourself. If not, hire a professional who will perform this transition for you.
In Conclusion
An SSL certificate and HTTPS are no longer optional – they are essential for any website that cares about user trust, security, and SEO.
These certificates encrypt data in transit, prevent hackers from redirecting traffic to fake sites, and ensure that your customers’ information does not fall into the wrong hands.
All major browsers mark HTTP sites as “Not Secure,” which can damage your credibility. Combined with the SEO boost, the HTTP/2 performance benefits, and the fact that free certificates from Let’s Encrypt make the cost virtually zero, there is no reason to run a WordPress site without SSL in 2026.
If you haven’t made the switch yet, check out the complete HTTPS migration guide linked above, and make sure to strengthen your overall site security as well – an SSL certificate is just one piece of the puzzle.
