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Security report for admaster.cz

adMaster, s.r.o. · Media · Czech Republic

High risk. 10 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

42/100

Risk levelHigh

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

adMaster, s.r.o. is a Czech-based internet advertising agency specializing in monetizing advertising space for website operators and providing comprehensive media representation and campaign planning services. The company targets website owners, advertisers, and media agencies primarily in the Czech Republic and internationally. Their service portfolio includes media representation, video advertising, Google Adsense support, mobile advertising, and targeted ad formats. The website presents a professional and consistent brand image with clear contact information and company registration details, positioning adMaster as a credible small-sized player in the media industry since 2010. Technically, the website employs common web technologies such as jQuery, Bootstrap, Google reCAPTCHA, and responsive design scripts, hosted likely by WEDOS, a Czech hosting provider. The site demonstrates moderate performance and good mobile optimization but lacks advanced SEO and accessibility features. Security measures include the use of Google reCAPTCHA on the contact form; however, no security headers or explicit SSL configuration details were found, indicating room for improvement in security posture. From a security perspective, the website does not expose sensitive data and uses HTTPS (implied by external scripts). However, it lacks security headers like CSP or HSTS and does not provide a security policy or vulnerability disclosure information. Privacy compliance is limited, with no dedicated cookie or privacy policy pages, though terms of service are available. The contact form collects user data with basic protections. Overall, the security score is moderate, and recommendations include enhancing security headers, publishing privacy and security policies, and improving form validation. The overall risk assessment is moderate with no critical issues or blocking mechanisms detected. The website is safe for general audiences, with no adult or questionable content. Strategic recommendations include improving privacy compliance, strengthening security headers, and establishing incident response and vulnerability disclosure processes to enhance trust and security culture.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

10 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

  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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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 admaster.cz

This scan found 27 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

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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
62
Security headers
15
Email security
70
DNS health
75
Network security
20
GDPR outside view
10
Average
42

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

adMaster operates as a specialized media agency focusing on online advertising monetization and campaign planning. Their competitive advantage lies in offering a broad portfolio of media partners and advanced ad formats including video and mobile advertising. The business model is service-based, generating revenue through ad sales and campaign management. Target customers include website owners seeking to monetize ad space and advertisers requiring tailored campaign planning. The company shows growth potential through diversified ad formats and partnerships. The presence of a clear contact section and company registration details supports credibility. However, the lack of advanced privacy and security policies may limit trust among privacy-conscious clients. The partnership ecosystem includes Google Adsense and Facebook for social media presence. Overall, adMaster maintains a solid position in the Czech online advertising market with opportunities to enhance compliance and security posture for competitive advantage.

Security posture

The website demonstrates a moderate security maturity level. It employs HTTPS and Google reCAPTCHA to protect the contact form from spam. However, the absence of key security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces protection against common web attacks. No vulnerability disclosure or incident response information is provided, indicating limited readiness for security incidents. Privacy compliance is minimal, with no cookie consent mechanism or detailed privacy policy. The contact form collects personal data but lacks visible advanced validation or encryption beyond HTTPS. No exposed sensitive data or vulnerable libraries were detected in the provided content. To improve security posture, the company should implement security headers, publish privacy and security policies, and establish incident response and vulnerability disclosure processes. These steps will reduce risk and enhance customer trust.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Publish detailed privacy and cookie policies with GDPR compliance information and implement a cookie consent mechanism.
  3. Establish and publicize a vulnerability disclosure policy and incident response contact channels to improve security transparency.
  4. Enhance contact form security with stronger input validation and encryption measures beyond HTTPS.
  5. Regularly audit and update SSL/TLS configurations to ensure strong encryption and compliance with best practices.

Contact details published on the site

Addresses
Legal name
adMaster, s.r.o.
VAT number
CZ03488853
Registration number
03488853
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
adMaster, s.r.o.
Description
adMaster is a comprehensive internet agency focused on monetizing advertising space for website operators. They provide media representation, campaign planning, video advertising, Google Adsense support, mobile advertising, and targeted ad formats.
Key services
Media representation, Campaign planning, Video advertising, Google Adsense support, Mobile advertising, Targeted ad formats
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Google reCAPTCHA, ResponsiveSlides.js, MixItUp.js, Google Fonts
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
55/100
Good practices seen
  • Use of Google reCAPTCHA on contact form

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Ad networks
Google Adsense
Marketing tools
Google reCAPTCHA
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is in Czech language targeting Czech and international clients.
  3. Contact form uses Google reCAPTCHA for spam protection.
  4. No explicit privacy or cookie policy pages found, but terms of service are available.
  5. No advanced security headers detected; security posture can be improved.
  6. Business information is clearly presented with registration details and contact info.
  7. Website uses common web technologies and libraries.
  8. No analytics or tracking scripts detected beyond reCAPTCHA.
  9. No vulnerability disclosure or security policy pages found.
Technical notes

Notes

The website uses a traditional web technology stack with jQuery, Bootstrap, and Google Fonts, supplemented by plugins for responsive slides and portfolio filtering. Google reCAPTCHA is integrated for spam protection on the contact form. The site is hosted likely by WEDOS, a Czech hosting provider, consistent with the domain registrar. Performance is moderate with good mobile optimization but basic accessibility and SEO features. No CMS or advanced frameworks were detected, indicating a custom or static site approach. The technical debt appears low but modernization opportunities include adopting modern JavaScript frameworks, improving accessibility, and enhancing SEO metadata. Security risks stem from missing security headers and limited privacy compliance. Overall, the technical infrastructure supports the business needs but can benefit from modernization and security enhancements.
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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