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Security report for letenky-nejlevnejsi.cz

Nejlevnější akční letenky · Transportation · Czech Republic

High risk. 11 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

43/100

Risk levelHigh

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

The website 'letenky-nejlevnejsi.cz' operates as an online travel affiliate platform specializing in offering cheap flight tickets, last-minute deals, and vacation packages primarily targeting Czech-speaking travelers. The business model relies on affiliate partnerships with multiple travel-related domains and services, providing users with access to discounted flights, weekend stays, and holiday offers. The site is relatively new, established in early 2023, and positions itself as a niche player in the Czech travel market. Technically, the site is built on WordPress with modern frontend technologies such as Bootstrap and jQuery, and it integrates third-party affiliate widgets and SEO plugins. However, the Google Analytics plugin is installed but not configured, indicating incomplete analytics setup. Security-wise, the site uses HTTPS but lacks important security headers and does not provide privacy or cookie policies, which are critical for GDPR compliance and user trust. Contact and incident response information are absent, limiting transparency and security readiness. Overall, the site is functional and professionally designed but requires improvements in privacy, security, and compliance to enhance trust and legal standing.

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

11 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 X-Frame-Options header

      Prevents clickjacking attacks

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

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

Keep watching letenky-nejlevnejsi.cz

This scan found 25 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
95
Security headers
15
Email security
60
DNS health
75
Network security
0
GDPR outside view
10
Average
43

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

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 letenky-nejlevnejsi.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for letenky-nejlevnejsi.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

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 targets budget-conscious travelers seeking affordable flights and travel deals, leveraging affiliate marketing to monetize traffic. The presence of numerous related domains in the footer suggests a networked affiliate ecosystem, enhancing market reach. The site’s content is localized in Czech, focusing on popular destinations and travel tips, which aligns with its target demographic. The business model is primarily commission-based through affiliate referrals, with no direct sales or booking engine. Growth potential depends on SEO performance, affiliate partnerships, and user trust. The lack of explicit company registration or contact details may limit credibility with some users. Strategic partnerships with established travel brands and improved compliance could strengthen market position.

Security posture

The website demonstrates basic security hygiene by enforcing HTTPS and avoiding exposure of sensitive data in the HTML. However, it lacks critical security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options, which are essential to mitigate common web attacks. The absence of privacy and cookie policies indicates non-compliance with GDPR, posing legal risks. No dedicated security or incident response contact information is provided, reducing preparedness for handling security incidents. The installed but unconfigured Google Analytics plugin may inadvertently collect user data without proper consent mechanisms. Overall, the security posture is moderate but requires significant enhancements to meet best practices and regulatory requirements.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Add essential security headers including CSP, HSTS, X-Frame-Options, and X-Content-Type-Options.
  3. Provide clear contact information including a dedicated security incident response email.
  4. Properly configure or remove unused analytics plugins to ensure privacy compliance.
  5. Enhance accessibility features and conduct regular security audits to identify vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Nejlevnější akční letenky
Description
Rezervujte si nejlevnější akční letenky do celého světa. Rezervace hotelů, aut a cestovního pojištění. Nejlevnější letenky od více jak 800 společností.
Key services
Prodej akčních letenek, Víkendové pobyty, Dovolené, Rezervace hotelů, aut a cestovního pojištění
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.2, PHP, Bootstrap CSS, jQuery, Font Awesome, Google Fonts, AIOSEO plugin, Pelikan affiliate flights widget
Frameworks
Bootstrap
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
55/100
Good practices seen
  • HTTPS enforced (implied by canonical and resource URLs)
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries detected

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a WordPress-based travel affiliate site focused on cheap flights and travel deals.
  2. No privacy, cookie, or terms of service policies found, which is a compliance gap.
  3. No explicit contact information or security incident contacts provided.
  4. Google Analytics plugin is installed but not configured, indicating incomplete analytics setup.
  5. Site uses HTTPS and modern frontend technologies but lacks security headers.
  6. Content is in Czech language targeting Czech and nearby markets.
  7. Footer contains many partner/related travel domains indicating a network of affiliate sites.
  8. No signs of adult or questionable content; content is safe for general audiences.
Technical notes

Notes

The website is built on a modern WordPress platform using Bootstrap for responsive design and jQuery for interactivity. It employs SEO best practices with structured data (JSON-LD), Open Graph, and Twitter card metadata to improve search engine visibility and social media sharing. The site loads external resources from reputable CDNs and affiliate networks, ensuring content richness. Performance is moderate with room for optimization, especially in script loading and caching. The mobile experience is good, but accessibility features are basic and could be improved. The technical debt is low given the recent launch, but incomplete analytics setup and missing security headers represent modernization opportunities and risks that should be addressed to maintain operational stability and user trust.
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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