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Security report for slevanaletenky.cz

Transportation · Czech Republic

High risk. 8 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

49/100

Risk levelHigh

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

The website slevanaletenky.cz is a Czech-language online platform focused on providing discounted airline ticket deals and travel tips primarily through affiliate marketing partnerships. It targets Czech-speaking travelers looking for affordable flights and weekend or vacation travel options. The site leverages third-party affiliate widgets and links to monetize traffic. Technically, it uses Bootstrap for styling and includes a cookie consent mechanism compliant with GDPR principles, although no explicit privacy policy or terms of service pages were found. Security posture is moderate with HTTPS implied but lacking visible security headers and incident response information. The domain is newly registered in June 2024, consistent with a new business launch, and shows no suspicious registration patterns. Overall, the site is functional, safe, and moderately professional but would benefit from enhanced transparency and security practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

8 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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  3. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  4. 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 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';…

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

Keep watching slevanaletenky.cz

This scan found 22 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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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
95
Security headers
30
Email security
60
DNS health
75
Network security
0
GDPR outside view
40
Average
50
After the cap
49

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 · found on this site
  • 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

The business operates as a small affiliate marketing platform within the transportation sector, focusing on flight deals aggregation for the Czech market. Its competitive advantage lies in aggregating multiple affiliate offers and providing travel tips to attract users. Revenue streams likely come from affiliate commissions on flight and accommodation bookings. The target customers are budget-conscious travelers in the Czech Republic. The site maintains partnerships with several known travel booking platforms and affiliate networks, indicating a solid ecosystem. Growth potential depends on expanding content quality, adding direct contact and compliance information, and improving trust signals.

Security posture

The current security maturity is basic to moderate. The site uses HTTPS but lacks explicit security headers such as Content Security Policy, HSTS, or X-Frame-Options. No privacy policy or incident response contacts are published, which is a compliance gap under GDPR. Cookie consent is implemented with granular categories, showing awareness of privacy requirements. No vulnerabilities or exposed sensitive data were detected in the provided content. The absence of contact information and security policies reduces the overall security posture and trustworthiness. Incident response readiness appears minimal or undocumented.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages to improve compliance and user trust.
  2. Implement and configure security headers (CSP, HSTS, X-Frame-Options) to enhance protection against common web attacks.
  3. Add clear contact information including a dedicated security or abuse email address for incident response.
  4. Conduct a security audit of third-party scripts and affiliate widgets to ensure no vulnerabilities are introduced.
  5. Enhance transparency by providing business registration details and data protection officer contact if applicable.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Online platform providing information and affiliate links for discounted airline tickets, weekend trips, and vacations primarily targeting Czech-speaking customers interested in travel deals.
Key services
Flight deal aggregation, Affiliate flight booking widgets, Travel tips and guides
Content quality
good
Branding
moderate

Technology

Stack
Bootstrap CSS, JavaScript, Pelikan affiliate flight widget, CookieConsent.js
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • HTTPS usage implied by URL
  • Cookie consent with granular categories

Analytics and tracking

Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
toplist.cz
Transparency
good

Site quality

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

Key observations

  1. Website is a Czech language travel deals and affiliate platform.
  2. No explicit privacy policy or terms of service pages found.
  3. Cookie consent mechanism is implemented with detailed categories.
  4. No direct contact information or company details provided on site.
  5. Multiple external affiliate and partner links present.
  6. No security headers detected in provided data.
  7. No signs of WAF or content blocking.
  8. Content is safe and suitable for general audiences.
Technical notes

Notes

The website uses a modern front-end stack with Bootstrap CSS and JavaScript, including an affiliate flight booking widget from pelikan.sk. The site is mobile optimized with responsive design and includes a cookie consent mechanism. Hosting and domain registration are managed by REG-WEBGLOBE with Czech name servers, consistent with the target market. Performance is moderate with no major issues detected in the HTML content. Accessibility features are basic but present. SEO is supported by meta description and keywords. There is no detected CMS or backend technology disclosed. Technical risks include reliance on multiple third-party affiliate scripts and lack of visible security headers.
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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