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Security report for mastercard.cz

Mastercard · Finance · Czech Republic

Partial score · DNS & email only

75/100

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

Mastercard Czech Republic operates as a regional branch of the global payments technology company Mastercard Incorporated, providing payment card and digital payment solutions to consumers and businesses in the Czech Republic. The website reflects a professional brand presence consistent with a large financial services enterprise. The technical infrastructure uses modern web technologies and enforces HTTPS, indicating a baseline of digital maturity. However, the absence of WHOIS data and lack of visible privacy and cookie policies limit full compliance and trust assessment. Security posture is generally good with HTTPS and no obvious vulnerabilities, but security headers and advanced protections are not evident in the provided content. Overall, the site presents a moderate risk profile with recommendations to improve transparency and compliance.

Scanned

This is an earlier scan of mastercard.cz. View the latest report

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
Checks completed
6of 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

1 finding 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

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Keep watching mastercard.cz

This scan found 12 issues across 5 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
72
Email security
70
DNS health
85
Network security
100
GDPR outside view
88
Average
83
After the cap
75

Not counted

  • Security headers: did not complete in this scan.
  • 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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention mastercard.cz, from OffSeq Breach.

Total records
57
Employees
0
Customers
57
Third parties
0
Weak passwords
37%

4 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for mastercard.cz.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

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Technical appendix

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

Business context

Business profile

Mastercard holds a leading market position in the payment processing sector globally and locally in the Czech Republic. The business model focuses on providing secure, efficient payment solutions including cards and digital services. The target audience includes both consumers and merchants. The website content and branding are consistent with a large enterprise financial institution. The lack of detailed WHOIS data and contact information is unusual for such an entity but may be due to privacy or registry policies. The company benefits from strong brand recognition and a global partnership ecosystem. Growth indicators and subsidiary information are not explicitly detailed on the site.

Security posture

The website enforces HTTPS, which is mandatory for secure communications. However, no explicit security headers were detected in the provided content, which could improve protection against common web attacks. There is no evidence of exposed sensitive data or vulnerable libraries in the visible content. The absence of security policies, incident response contacts, or vulnerability disclosure mechanisms suggests room for improvement in security transparency and readiness. Compliance with GDPR and other regulations is not clearly demonstrated on the site. Overall, the security posture is adequate but could be enhanced with additional best practices and policy disclosures.

Recommendations

  1. Implement and publish comprehensive privacy and cookie policies to improve compliance and user trust.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance security posture.
  3. Provide clear contact information including support emails and phone numbers for customer and security incident reporting.
  4. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible security reporting.
  5. Enhance SEO and accessibility features to improve user experience and search engine visibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mastercard
Description
Mastercard is a global payments technology company providing payment solutions and services in the Czech Republic.
Key services
Payment cards, Digital payment solutions, Merchant services
Content quality
basic
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Web Components
Frameworks
DXP (Digital Experience Platform)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website content is accessible and not blocked by WAF or security challenges.
  2. WHOIS data is unavailable, limiting domain registration trust analysis.
  3. Website uses HTTPS and modern web technologies.
  4. No explicit privacy, cookie, or terms of service policies found in the provided HTML content.
  5. No contact emails or phone numbers explicitly found in the HTML content.
  6. No security.txt or vulnerability disclosure information detected.
  7. Branding and content indicate a financial services company focused on payment solutions.
  8. Limited SEO and accessibility features detected.
  9. No advertising or tracking scripts explicitly detected in the provided content.
Technical notes

Notes

The website uses modern HTML5, CSS3, and JavaScript with Web Components technology, likely built on a Digital Experience Platform framework. The site is mobile optimized with responsive design elements. Performance is moderate based on the complexity of scripts and styles. There is no detected CMS or hosting provider information in the provided content. Technical debt indicators are minimal but the lack of advanced SEO and accessibility features suggests opportunities for modernization. No third-party analytics or advertising scripts were detected, indicating a minimal tracking footprint.
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

Earlier scans of this domain

  1. 74/100Medium25 findingsView report
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