Is SSL necessary without online payments?

Yes. Even a brochure website may contain a contact form, analytics, account access or other interactions involving visitor information. HTTPS also avoids unsecured-site warnings and provides the standard expected of a professional website.

Is a free SSL certificate secure?

A reputable free certificate can provide the same core connection encryption as a paid certificate. Correct configuration matters more than simply paying for the certificate.

Does HTTPS mean my website cannot be hacked?

No. HTTPS protects the connection between the browser and the server. It does not fix vulnerable code, weak passwords, compromised accounts, outdated plugins or insecure hosting.

Does HTTPS protect form emails?

HTTPS protects the submission while it travels from the visitor's browser to the web server. The form's onward delivery by email is a separate process that must also be secured appropriately.

Google has used HTTPS as a ranking signal, but it is only one of many signals. HTTPS will not replace high-quality content, technical SEO, strong local relevance or a good user experience.

How long does a certificate last?

Certificate validity periods vary, and many modern certificates use relatively short validity periods with automated renewal. Businesses should monitor renewal rather than assuming it will always succeed.

Why does my website still say Not Secure?

Possible reasons include missing redirects, opening the HTTP version, an expired certificate, a domain mismatch, an incomplete chain, mixed content, DNS issues or CDN caches that have not updated.

Do subdomains require certificate coverage?

Each hostname used by the business must be covered by a suitable certificate, either through individual certificates, a multi-domain certificate or, where appropriate, a wildcard certificate.

Is a padlock proof that a website is legitimate?

No. HTTPS confirms an encrypted connection to the displayed domain. It does not guarantee that the organisation is honest or that the entire website is free from vulnerabilities.

Website Security Guide

What Is SSL?

SSL is the familiar name for the certificate and encryption setup used to create an HTTPS connection. Modern websites normally use TLS, which protects information while it travels between a visitor's browser and the website server.

16 min read · Last reviewed 18 July 2026 · Published by AHANIX WEB DESIGN LIMITED

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http://https://example-business.co.uk

Browser

Server

Certificate

example-business.co.uk

EncryptionIntegrityAuthentication

SSL is the commonly used name. Modern websites use TLS to create an encrypted HTTPS connection.

HTTPS reduces connection-related risks but does not guarantee that a website cannot be hacked.

Contents: What SSL Is

Foundation

What Is an SSL Certificate?

An SSL certificate is a digital certificate installed and configured for a website's domain. It allows the website to establish an encrypted HTTPS connection with the visitor's browser.

When someone opens an HTTPS website, the browser and web server perform a process often referred to as a TLS handshake. During this process, the browser checks the certificate and both sides establish the secure connection used for the visit.

Encryption

Helps prevent information being read while it travels between the visitor and the website.

Integrity

Helps prevent transmitted information being secretly modified without detection.

Authentication

Helps the browser verify that it is connecting to the server authorised for the requested domain.

Visitor Encrypted Connection Website Server

Is Your Website Properly Protected?

Ahanix can review your HTTPS configuration, certificate coverage, redirects, mixed content and wider website-security risks.

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Your Business, Built and Protected Online.Security controls reduce risk but cannot guarantee that a website will never experience a cyberattack, technical fault or data incident.