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Security report for currencylayer.com

Currencylayer · Finance · Austria

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

Currencylayer is a specialized financial technology company providing a free and reliable currency exchange API service. Founded in 2015 and based in Austria, it targets developers and businesses requiring real-time and historical forex data. The company positions itself as a startup-friendly and accurate currency conversion API provider, supporting 168 world currencies. The website reflects a professional and consistent brand image with clear business descriptions and client trust signals. Technically, the site uses a combination of legacy and modern web technologies including jQuery 1.11.3, Google Tag Manager, Google reCAPTCHA, and Stripe for payment processing, hosted behind Cloudflare DNS services. While the site is mobile-optimized and SEO-friendly, the use of an outdated jQuery version presents a security risk. Security posture is generally good with HTTPS enforced and client-side protections, but could be improved by updating libraries and adding explicit security headers. Privacy compliance is well addressed with clear privacy and cookie policies and GDPR indicators. Overall, the website is trustworthy and professionally maintained, with minor technical and security improvements recommended.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
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. 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. 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 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

Need hands-on remediation? Email guard@offseq.com

Keep watching currencylayer.com

This scan found 19 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.

Daily monitoring

Recommended

€25per month

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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
75
Security headers
50
Email security
60
DNS health
80
Network security
100
GDPR outside view
73
Average
73

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

Currencylayer operates in the finance sector, offering API services for currency exchange data. Its business model revolves around providing free and paid API plans, targeting developers and businesses needing currency conversion and forex rate data. The company demonstrates strong market positioning through client logos from reputable companies and a partnership with apilayer.com, indicating a solid ecosystem. Revenue streams likely include subscription plans and enterprise solutions. The website content and structured data indicate a small-sized company with a focused product offering. The presence of multiple social media channels and Google site verification suggests active digital marketing and brand presence. No parent company or subsidiaries are identified, indicating independent operation.

Security posture

The website enforces HTTPS and integrates Google reCAPTCHA to protect forms, alongside Stripe for secure payment processing. However, the use of an outdated jQuery library (v1.11.3) introduces potential vulnerabilities. Security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options are not explicitly detected, which could improve defense-in-depth. No incident response or security policy pages were found, indicating room for maturity in security governance. No vulnerabilities like exposed credentials or malware were detected. Overall, the security posture is moderate with good foundational practices but requires updates and enhancements to meet higher standards.

Recommendations

  1. Upgrade jQuery and other third-party libraries to current supported versions to mitigate known vulnerabilities.
  2. Implement and verify comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Develop and publish a formal security policy and incident response plan accessible on the website.
  4. Conduct regular security audits and penetration testing to identify and remediate potential vulnerabilities.
  5. Enhance privacy disclosures with explicit data retention policies and DPO contact information to strengthen GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Currencylayer
Description
Free and startup-friendly currency converter JSON API for real-time and historical exchange rates - reliable and accurate, supporting 168 world currencies.
Key services
Real-time currency exchange rates API, Historical forex rates API, Currency conversion services
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.11.3, Google reCAPTCHA, Google Tag Manager, Stripe payment integration, Cloudflare DNS and CDN
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA for forms
  • Client-side Google Tag Manager loaded on interaction
  • Stripe payment integration with publishable key

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
FirstPromoter
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge
  2. Content is rich and relevant to currency exchange API services
  3. Use of modern web technologies and third-party integrations
  4. Clear contact information and structured data present
  5. No signs of phishing, malware, or suspicious content
  6. Some outdated libraries (jQuery 1.11.3) present which may pose security risks
Technical notes

Notes

The website uses a mix of legacy (jQuery 1.11.3) and modern technologies such as Google Tag Manager, Google reCAPTCHA, and Stripe payment integration. Hosting is managed via Cloudflare DNS and CDN services, with domain registration through GoDaddy. The site is mobile-optimized with responsive design and good SEO metadata including Open Graph and JSON-LD structured data. Performance is moderate, with asynchronous loading of scripts and deferred analytics loading on user interaction. Technical debt is indicated by outdated libraries and missing explicit security headers. Opportunities exist to modernize the tech stack, improve accessibility, and enhance security configurations to reduce risk and improve user experience.
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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