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Security report for letenky-1.cz

AliaWeb, spol. s r.o. · Transportation · Czech Republic

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

Security score

52/100

Risk levelMedium

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

The website www.letenky-1.cz operates as an online platform for selling cheap flight tickets primarily targeting the Czech market. It offers a fast and unique flight search and booking experience by embedding a third-party booking engine via iframe. The business appears to be a small-sized entity under the legal name AliaWeb, spol. s r.o., with a partnership connection to Agentura Zájezdy, a.s. and other Czech travel portals. The site content is in Czech and focuses on transportation services related to air travel. Technically, the website uses basic JavaScript and jQuery libraries, with external resources loaded over HTTP, indicating a lack of HTTPS enforcement. The site embeds external scripts and stylesheets from multiple domains, including partner and advertising networks. The design and user experience are basic, with moderate SEO and accessibility features. The site lacks modern CMS or frameworks and shows signs of technical debt, such as commented-out analytics code and no visible security headers. From a security perspective, the site lacks HTTPS, security headers, and cookie consent mechanisms, which lowers its security posture. The WHOIS data is unavailable, suggesting privacy protection or unregistered status, which impacts trust. No explicit privacy or incident response policies are found on the site, though a basic privacy policy is linked externally. The site does not expose sensitive data visibly but could improve security by implementing HTTPS and security best practices. Overall, the website presents moderate business credibility but requires significant improvements in security and privacy compliance to enhance trustworthiness and protect user data. Strategic recommendations include implementing HTTPS, adding security headers, establishing cookie consent, and improving WHOIS transparency.

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. 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';…

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

Keep watching letenky-1.cz

This scan found 28 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
52
Security headers
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
10
Average
52

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

The business operates in the transportation sector, focusing on online flight ticket sales in the Czech Republic. It leverages partnerships with established Czech portals such as kurzy.cz, zajezdy.cz, and kralovna.cz to enhance market reach. The business model is commission or fee-based through flight bookings via an embedded third-party engine. The target customers are general Czech consumers seeking affordable flights. The company appears small with limited direct contact information, relying on partner branding and external booking services. Growth potential depends on improving digital maturity and security to build customer trust. The partnership ecosystem is a key asset, linking to travel and financial portals. No direct revenue or financial data is available, but the presence of advertising and tracking scripts suggests monetization through ads and affiliate programs.

Security posture

The current security posture is weak due to the absence of HTTPS, lack of security headers, and no cookie consent mechanism. The site loads all resources over HTTP, exposing users to potential man-in-the-middle attacks. No incident response or security policy information is provided, and WHOIS data is missing, reducing transparency. The embedded iframe from a third-party booking engine may introduce additional risks if not sandboxed properly. Tracking scripts from Google Tag Manager and Gemius are present, but privacy compliance is minimal. The site does not expose sensitive data in the HTML but lacks visible protections. Overall, the security maturity is low, with critical improvements needed to protect user data and comply with GDPR and other regulations.

Recommendations

  1. Implement HTTPS across the entire website and all external resources to secure user data and improve trust.
  2. Add essential security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web attacks.
  3. Establish a visible cookie consent mechanism to comply with GDPR and enhance privacy transparency.
  4. Publish clear privacy, security, and incident response policies on the website to improve compliance and user confidence.
  5. Review and secure third-party iframe content and external scripts to reduce risk from embedded resources.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
AliaWeb, spol. s r.o.
Description
Online prodej - levné letenky, unikátní a nejrychlejší vyhledání a rezervace, nejlevnější letenky do celého světa.
Key services
Flight ticket search, Flight ticket booking, Online reservations
Content quality
basic
Branding
moderate

Technology

Stack
JavaScript, jQuery
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
30/100

Analytics and tracking

Services
Google Analytics (commented out), Google Tag Manager, Gemius
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Gemius
Tracking pixels
Gemius
Transparency
basic

Site quality

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

Key observations

  1. Website uses iframe to embed third-party booking engine.
  2. No HTTPS usage detected in HTML content; external scripts and CSS loaded over HTTP.
  3. WHOIS data unavailable, indicating privacy protection or unregistered domain.
  4. Basic privacy policy link present but no cookie consent mechanism.
  5. Phone contact number provided but no email contact found.
  6. No visible security headers or advanced security measures.
  7. Website content is in Czech language targeting Czech customers.
  8. Multiple external links to reputable Czech portals and travel sites.
  9. Google Analytics code is commented out; Google Tag Manager is active.
  10. No forms detected in the main HTML content; booking handled via iframe.
Technical notes

Notes

The website uses a simple technology stack with JavaScript and jQuery, embedding a third-party booking iframe. External CSS and JS resources are loaded over HTTP, which is a significant security risk. The site lacks a modern CMS or framework and shows basic SEO and accessibility features. Performance is moderate but could be improved by optimizing resource loading and enabling HTTPS. The site is not fully mobile optimized, and navigation is basic. The presence of commented-out Google Analytics code suggests incomplete analytics implementation. Hosting provider details are not discernible from the content. Overall, the technical infrastructure is functional but outdated and insecure, requiring modernization and security hardening.
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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