Website Security Checks : Essential Steps to Protect Your Business Online
James RodriguezShare
Every business with an online presence is up against the same thing - keeping up with website security requirements that keep shifting. Customers notice when something looks wrong. Search engines penalize sites that fall behind. Getting on top of the essentials now saves a lot of headaches later.
Trustico® works with businesses of all sizes on their SSL Certificate needs, and the same gaps come up time and again. This guide covers the checks that matter most, written for anyone responsible for keeping a website secure, whether that is one domain or fifty.
What Digital Trust Actually Means for Your Business
Digital trust is not a marketing term. It has real, measurable effects on how customers interact with your website. A visitor who sees a browser security warning will leave. One who lands on a site without HTTPS will think twice before entering any personal details. That lost confidence translates directly into lost revenue.
SSL Certificates are the foundation here. These SSL Certificates create an encrypted connection between your server and your visitors, protecting login credentials, payment details, and any other sensitive data in transit. Beyond the encryption itself, SSL Certificates also confirm your website's identity, telling visitors that the site they have reached is the legitimate one and not a fraudulent copy.
Note : The padlock icon and HTTPS indicator in browser address bars have become shorthand for trustworthiness. Visitors have learned to look for them, and to be suspicious when they are absent.
The Security Checks That Actually Matter
Most website security problems are not sophisticated attacks. They are expired SSL Certificates, misconfigured chains, overlooked subdomains, and validation methods that stopped working months ago. Regular checks catch these issues before your visitors do.
Verify Your SSL Certificate Status
The first step is straightforward - confirm your SSL Certificate has not expired and note the renewal date somewhere you will actually see it. Then go a little further. Check that the SSL Certificate covers every domain and subdomain you use, including both the www and non-www versions of your domain. Servers that present an incomplete SSL Certificate chain will throw errors in some browsers even when the SSL Certificate itself is valid, so confirm that any required Intermediate SSL Certificates are properly included. Learn About Intermediate Certificates and Chain Configuration 🔗
Trustico® provides tools to check your SSL Certificate configuration and surface any issues before they affect your visitors.
Review Your SSL Certificate Validation Level
Not all SSL Certificates are the same. The validation level determines how much identity verification sits behind the SSL Certificate, and that matters to visitors deciding whether to trust your site with their information.
Domain Validation (DV) SSL Certificates verify domain control only. These SSL Certificates issue quickly and work well for websites that do not handle sensitive transactions. Organization Validation (OV) SSL Certificates go further and confirm your organization's legal identity, giving visitors additional confidence that a real business is behind the website. Extended Validation (EV) SSL Certificates involve the most thorough checks, verifying legal status, physical existence, and operational details through multiple steps. Explore The Validation Procedure for SSL Certificates 🔗
If your site handles payments, collects personal data, or operates in a regulated sector, Organization Validation (OV) or Extended Validation (EV) SSL Certificates are worth serious consideration.
Prepare for Shorter SSL Certificate Validity Periods
The CA/Browser Forum has approved a staged reduction in maximum SSL Certificate validity periods. Maximum validity drops to 200 days from March 2026, then continues reducing to 47 days by March 2029. For anyone managing SSL Certificates manually, that is a significant increase in renewal workload and a much higher risk of accidentally letting an SSL Certificate expire.
The businesses that handle this transition best will be the ones that move to automation before the shorter periods bite. Manual renewals that worked fine at one-year intervals simply will not scale at 47 days.
Important : The shift to shorter SSL Certificate validity periods is the most significant change to SSL Certificate management in years. Reviewing your renewal processes now, rather than waiting until a shorter validity period catches you out, is strongly recommended.
Trustico® Certificate as a Service (CaaS) handles SSL Certificate issuance, renewal, and deployment automatically through the Automated Certificate Management Environment (ACME) protocol. Once configured, renewal happens without manual intervention. Discover Certificate as a Service (CaaS) from Trustico® 🔗
Confirm Your Domain Control Validation Methods
Before any Certificate Authority (CA) issues an SSL Certificate, you need to prove you control the domain. This is Domain Control Validation (DCV), and it is worth understanding your options so you are not scrambling when a renewal comes around.
E-Mail Domain Control Validation (DCV) sends a confirmation to an approved address at your domain. Domain Name System (DNS) Domain Control Validation (DCV) requires adding a specific record to your Domain Name System (DNS) zone. File-based Domain Control Validation (DCV) involves placing a file on your web server that the Certificate Authority (CA) retrieves. Learn About File-Based Authentication for Domain Control Validation (DCV) 🔗
Check that your infrastructure can actually complete the Domain Control Validation (DCV) method you rely on. Domain Name System (DNS) access, working e-mail addresses, and web server access all need to be confirmed well in advance, not scrambled for at renewal time. Explore E-Mail Address Handling for SSL Certificates 🔗
Check Your Certificate Authority Authorization Records
Certificate Authority Authorization (CAA) records are Domain Name System (DNS) records that control which Certificate Authorities (CA) can issue SSL Certificates for your domain. Without them, any Certificate Authority (CA) can issue SSL Certificates for your domain, including ones that should not.
Adding Certificate Authority Authorization (CAA) records closes that gap. They are a straightforward Domain Name System (DNS) change that restricts SSL Certificate issuance to only the Certificate Authorities (CA) you explicitly name. Check whether your domain already has Certificate Authority Authorization (CAA) records in place, and if you use SSL Certificates issued by Sectigo® through your Trustico® account, confirm that Sectigo® is listed as an authorized issuer. Learn About Certificate Authority Authorization (CAA) Records 🔗
Review Your Domain Name System Security Extensions Configuration
From March 2026, Certificate Authorities (CA) must validate Domain Name System Security Extensions (DNSSEC) signatures encountered during Domain Control Validation (DCV) and Certificate Authority Authorization (CAA) lookups. A Domain Name System Security Extensions (DNSSEC) configuration with errors - expired signatures, broken chains of trust, or missing Delegation Signer records - will cause SSL Certificate issuance to fail.
If your domain has Domain Name System Security Extensions (DNSSEC) enabled, run it through a diagnostic tool to confirm everything validates correctly. If you do not use Domain Name System Security Extensions (DNSSEC), this change does not affect you.
Tip : Domain Name System Security Extensions (DNSSEC) is entirely optional. Domains that have it enabled need to keep the configuration valid. There is no requirement to enable it if you have not already done so.
Audit Your SSL Certificate Inventory
Organizations that have grown over time, acquiring new domains, launching microsites, and standing up subdomains for various services, often end up with SSL Certificates scattered across different Certificate Authorities (CA), different expiry dates, and different validation levels. Some SSL Certificates get forgotten entirely. That is how unexpected expirations happen.
A proper SSL Certificate inventory lists every domain and subdomain your organization uses, which SSL Certificate covers it, who issued it, and when it expires. It sounds tedious but it pays for itself the first time it stops an expiry from slipping through unnoticed. Trustico® provides tracking tools to maintain this visibility across your entire SSL Certificate portfolio. Discover The Trustico® Tracking System 🔗
Evaluate Your Wildcard and Multi-Domain Requirements
Managing a separate SSL Certificate for every subdomain gets complicated quickly. Wildcard SSL Certificates cover a primary domain and all its subdomains under a single SSL Certificate, meaning one renewal and one point of management. Multi-Domain SSL Certificates cover multiple distinct domain names on a single SSL Certificate, which suits organizations running several separate websites or brands. Learn About Wildcard SSL Certificates 🔗
Both options reduce the number of individual SSL Certificates you need to track and renew. If your current setup involves a long list of single-domain SSL Certificates, it is worth reviewing whether consolidation makes sense. Explore Multi-Domain SSL Certificates 🔗
Keeping Security in Good Shape Over Time
A one-time audit is a good start, but security requires ongoing attention. The checks above are most useful when they become habits rather than one-off tasks.
Implement SSL Certificate Monitoring
SSL Certificate monitoring removes the risk of expiry catching you off guard. A good monitoring service tracks your SSL Certificates and sends alerts well before the expiry date, giving you time to renew without rushing.
Schedule Regular Security Reviews
Quarterly reviews suit most organizations. Run through SSL Certificate validity, check whether any new subdomains have been launched without SSL Certificate coverage, confirm monitoring is working, and review who has access to your Domain Name System (DNS) and Certificate Authority (CA) accounts. Complex environments with many domains or strict compliance requirements may warrant monthly checks.
Maintain Documentation and Procedures
When the person who manages your SSL Certificates is unavailable and something breaks, documentation saves the day. Record where your SSL Certificates are installed, how to access your Certificate Authority (CA) account, which Domain Control Validation (DCV) methods your infrastructure supports, and who can authorize SSL Certificate requests. Keep it somewhere the right people can find it.
Where to Go From Here
The checks in this guide are practical and achievable. None require specialist security expertise. Start with the SSL Certificate inventory and expiry verification. From there, review your validation levels, Domain Control Validation (DCV) methods, and Certificate Authority Authorization (CAA) records. If shorter SSL Certificate validity periods are on your radar, now is a good time to look seriously at automation.
Trustico® offers SSL Certificates across every validation level - Domain Validation (DV), Organization Validation (OV), and Extended Validation (EV) - along with Certificate as a Service (CaaS) for organizations that want automated management. Our team can help you work out what suits your setup. Learn About Why Choose Trustico® for Your SSL Certificates 🔗
Trustico® has the SSL Certificate products, tools, and support to help your business stay secure. Whether you need a single SSL Certificate or a managed solution covering your entire domain portfolio, we are here to help.
