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Security report for calastone.com

Calastone · Finance · United Kingdom

Low risk. 3 critical or high findings in SSL/TLS and Security headers.

Security score

77/100

Risk levelLow

0–100, higher is better. How it is calculated

Calastone operates as a leading technology platform specializing in the global funds transaction network, facilitating automated and efficient fund distribution for financial institutions and asset managers. The company positions itself as a market leader in the financial technology sector, targeting institutional clients with a focus on operational efficiency and automation. The website reflects a professional and consistent brand image aligned with its business focus. Technically, the site is built on WordPress and incorporates modern web technologies including FontAwesome Pro icons and marketing analytics tools such as Pardot and LinkedIn Insight Tag. The site demonstrates good mobile optimization and moderate performance, though some accessibility features could be enhanced. Security-wise, the website enforces HTTPS and uses standard security practices but lacks visible advanced security headers and a vulnerability disclosure mechanism. The absence of explicit privacy and cookie policies and missing WHOIS registration data slightly reduce the overall trust and compliance posture. Overall, the website is professional and trustworthy but would benefit from enhanced transparency and security disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

3 findings rated critical or high. Fix these first.

  1. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

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Keep watching calastone.com

This scan found 18 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
47
Security headers
65
Email security
85
DNS health
80
Network security
100
GDPR outside view
83
Average
77

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Calastone's market positioning as the largest global funds transaction network provider gives it a competitive advantage in the financial technology sector. Its business model centers on providing a technology platform that streamlines fund distribution and processing, targeting financial institutions and asset managers. The company likely generates revenue through platform usage fees and value-added services. The website's content and technology stack indicate a mature digital presence with integration of marketing and analytics tools to support customer engagement and growth. The lack of visible subsidiaries or parent company information suggests an independent or standalone entity. The company’s partnership ecosystem is not explicitly detailed on the site, but external scripts indicate use of marketing platforms like Pardot and LinkedIn. Growth indicators and strategic observations are limited due to lack of detailed business disclosures on the website.

Security posture

The website demonstrates a baseline security maturity with HTTPS enabled and use of reputable third-party marketing and analytics scripts. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-XSS-Protection indicates room for improvement in mitigating common web vulnerabilities. No evidence of exposed sensitive data or vulnerable libraries was found in the provided content. The lack of a security.txt file or vulnerability disclosure page reduces transparency and incident response readiness. Compliance with GDPR and other data protection regulations is unclear due to missing privacy and cookie policies. Overall, the security posture is adequate for a corporate website but should be enhanced to meet higher standards of security and compliance expected in the financial technology sector.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance statements and consent mechanisms.
  2. Add and configure security headers such as Content-Security-Policy, X-Frame-Options, and X-XSS-Protection to strengthen web security.
  3. Publish a security.txt file and establish a vulnerability disclosure program to improve transparency and incident response.
  4. Enhance accessibility features to comply with standards and improve user experience for all visitors.
  5. Conduct regular audits of third-party scripts and dependencies to identify and mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Calastone
Description
Calastone is a technology company providing the largest global funds transaction network, enabling automated and efficient fund distribution and processing.
Key services
Funds transaction network, Automated fund distribution, Operational efficiency solutions
Content quality
good
Branding
consistent

Technology

Stack
WordPress, FontAwesome Pro, Pardot, LinkedIn Insight Tag, JavaScript, CSS
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Use of security and analytics scripts

Analytics and tracking

Services
Pardot, LinkedIn Insight
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Pardot, LinkedIn Insight
Marketing tools
Pardot, LinkedIn Insight Tag
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is accessible and not blocked by WAF or security challenges.
  2. WHOIS data is unavailable or domain may be privacy protected or unregistered under queried name.
  3. Website uses WordPress CMS with professional design and modern technologies.
  4. No explicit privacy, cookie, or terms of service policies found in provided content.
  5. No contact emails or phone numbers explicitly found in the provided HTML snippet.
  6. External scripts include Pardot and LinkedIn Insight for marketing and analytics.
  7. No security.txt or vulnerability disclosure page detected.
  8. No explicit data protection officer contact information found.
  9. Content is safe and appropriate for general audiences.
  10. Security headers and advanced security configurations not evident from provided data.
Technical notes

Notes

The website is built on the WordPress CMS platform, leveraging modern web technologies including FontAwesome Pro for icons and JavaScript-based marketing tools like Pardot and LinkedIn Insight Tag. The site includes responsive design elements ensuring good mobile optimization. Performance is moderate, with potential for improvement through optimization of scripts and assets. The technical infrastructure appears standard for a corporate website but lacks advanced hosting or CDN information. There is no evidence of technical debt or outdated technologies in the provided content. Opportunities exist to modernize security configurations and enhance SEO and accessibility features to improve overall digital maturity.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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