Could Your Website Be Vulnerable to These Risks?

Most hacks aren’t genius-level — they’re just opportunists finding unlocked doors.

  • Your emails could go to spam — or fail to deliver entirely
  • Scammers may spoof your domain to impersonate your brand
  • Your site could be penalised by Google for speed or security issues
  • Security warnings in browsers may scare visitors away
  • Broken forms or missing HTTPS could cost you leads

Free Tools to Check Your Website

Spot problems that lose customers: emails going to spam, slow pages, security warnings. Run these tools against your own domain.

Lock Down Your Site

Are visitors seeing security warnings?

Not Sure Where to Start? Run One Scan

Hardenize checks your TLS certificate, security headers, email authentication, DNSSEC, CAA records, and cookie security in a single scan — colour-coded so you can see exactly what’s missing at a glance. A good first stop before digging into the individual checks below.

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SSL / HTTPS

An expired SSL certificate shows a red warning in every visitor's browser. They leave immediately. Make sure HTTPS is enforced with a valid, up-to-date certificate.

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Security Headers

Add headers like Strict-Transport-Security, X-Frame-Options, and Content-Security-Policy to block attacks.

DNSSEC (Domain Security)

DNSSEC cryptographically signs your DNS records to help prevent them being tampered with or redirected. It adds another layer of domain protection, but it’s not a replacement for SPF, DKIM and DMARC — those are the core tools for email deliverability and spoofing protection.

Stop Emails Going to Spam

Are your messages reaching inboxes?

Email Authentication

Prevent spoofing, spam issues and sender reputation damage by setting up SPF, DKIM, and DMARC correctly.

Speed Up Your Site

Are visitors leaving before it loads?

Speed & Core Web Vitals

Google penalises slow pages in rankings. Visitors abandon sites that take 4+ seconds to load. Test your performance on mobile and desktop—that's where real visitors come from.

Mobile & Accessibility

Make sure your site works well on phones and meets accessibility standards. Clear layouts, readable fonts, and proper contrast help everyone navigate.

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Terms used on this page

Short definitions for the acronyms above. For the full reference, see the technical glossary.

HTTPS (SSL)
HyperText Transfer Protocol Secure – encrypts traffic between the browser and your site so it can’t be read or tampered with in transit.
Security Headers
HTTP response headers (CSP, HSTS, X-Frame-Options and similar) that tell the browser how to harden the page against common attacks.
DNSSEC
Domain Name System Security Extensions – cryptographically signs DNS records so attackers can’t redirect your domain to a fake server.
SPF
Sender Policy Framework – a DNS record that lists which mail servers are allowed to send email from your domain, preventing spoofing.
DKIM
DomainKeys Identified Mail – a cryptographic signature added to outgoing email so receivers can verify it really came from you and wasn’t altered.
DMARC
Domain-based Message Authentication, Reporting & Conformance – builds on SPF and DKIM, telling receiving mail servers what to do when messages fail authentication.

Found something that needs fixing?

We can review your site, lock down the issues, and give you a plain-English report on what we did and why.

Book a Website Health Check