cstl.com
CST | Cyber Security & Information Protection
Last scanned Jul 30, 2026, 3:00 AM · 9 views
Overall score
Great
Summary
CST is a specialist supplier of Cyber Security, Information Protection and Managed Security Services with over 25 years of dedicated experience. This website uses Google Analytics. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.
CST is a specialist supplier of Cyber Security, Information Protection and Managed Security Services with over 25 years of dedicated experience.
Top issues to fix
9 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
275 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-2 overall since Jul 22, 2026
- Overall
- 87
- SEO
- 70
- Security
- 85
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
CST is a specialist supplier of Cyber Security, Information Protection and Managed Security Services with over 25 years of dedicated experience.
Meta tags
- Title
- CST | Cyber Security & Information Protection
- Description
- CST is a specialist supplier of Cyber Security, Information Protection and Managed Security Services with over 25 years of dedicated experience.
- Canonical
- Language
- en
- Charset
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- cstl.com
- Valid from
- Jun 10, 2026
- Valid to
- Sep 8, 2026
- Days until expiry
- 40
- SAN domains
- cstl.com, www.cstl.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 11 · H3 0
Links
27 internal · 2 external · 20 broken
Images
15 total · 0 missing alt
Scripts / Styles
15 scripts · 2 stylesheets
JS / CSS size
1.1 KB · 0 B
Page size
19.2 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://cstl.com
- Final URL
- https://cstl.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 275 ms
- HTML size
- 19.2 KB
- Redirect chain
- https://cstl.com
See something wrong on this report? Request a correction
Related websites
Same technology stack
criticalmention.com
Critical Mention by Onclusive
denhaag.nl
Gemeente Den Haag
bazaart.com
AI design tools for small businesses | Bazaart
complyadvantage.com
ComplyAdvantage | AI-driven fraud & AML risk detection
datcom.com.au
Datcom Cloud: Managed IT & Cybersecurity Services Sydney
elogic.it
Dinova - Innovazione Digitale Per le Aziende
Frequently asked questions
- What technology does cstl.com use?
- cstl.com is built with jQuery, Google Analytics.
- Is cstl.com secure (HTTPS)?
- Yes. cstl.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 8, 2026.
- Who hosts cstl.com?
- Hosting provider information for cstl.com is not available yet.
- What is cstl.com's SEO score?
- cstl.com scored 70/100 for SEO in the latest analysis (fair).
- What is cstl.com's overall website score?
- cstl.com has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
- Has cstl.com's score changed over time?
- cstl.com's overall score has declined by 2 points (from 89 to 87) since Jul 22, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card