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Security report for know.cz

KNOWLIMITS Group a.s. · Media · Czech Republic

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

Security score

47/100

Risk levelHigh

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

KNOWLIMITS Group a.s. is the largest independent Czech communication group specializing in comprehensive marketing and media services. The company offers tailored, data-driven solutions leveraging new technologies and AI tools, serving clients across 15 European markets. Their expertise spans strategy, media planning, digital and social media, creative production, retail marketing, data research, PR, and events. The group employs over 250 professionals and reported a turnover of 4 billion CZK in 2024. Technically, the website is built on WordPress with modern frameworks like Bootstrap 5 and integrates Google Tag Manager for analytics. The site is well-structured, mobile-optimized, and SEO-friendly, though it lacks explicit privacy and cookie policies. Security posture is good with HTTPS enabled but could be improved by adding security headers and incident response information. WHOIS data is unavailable, which slightly reduces domain trustworthiness, but the professional presentation and detailed business information support legitimacy.

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';…

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

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  • TLS certificates and expiry
  • DNS records
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  • 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
Security headers
15
Email security
80
DNS health
85
Network security
20
GDPR outside view
10
Average
47

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

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 know.cz, from OffSeq Breach.

Total records
6
Employees
0
Customers
0
Third parties
6
Weak passwords
17%

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 know.cz.

Select it in the checkout above.

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

Technical appendix

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

Business context

Business profile

KNOWLIMITS holds a strong market position as the largest independent communication group in the Czech Republic with international reach. Their business model focuses on B2B marketing and communication services, targeting enterprises needing full-spectrum marketing solutions. The group’s subsidiaries cover various specialized marketing disciplines, enhancing their service portfolio. Revenue streams likely include consulting, media buying, creative services, and data analytics. The company’s active management and investment in AI and research projects indicate growth orientation and innovation. Partnerships and social media presence reinforce their market credibility. The absence of privacy and security policies online suggests areas for compliance improvement.

Security posture

The website demonstrates a moderate to good security posture with HTTPS enforced and no visible sensitive data leaks. However, the absence of common security headers such as Content-Security-Policy, X-Frame-Options, and others is a gap. No explicit incident response or vulnerability disclosure information is provided, which limits transparency. The use of Google Tag Manager introduces third-party script risks that should be monitored. Overall, the security maturity is adequate for a marketing agency but could be enhanced by adopting best practices in headers, policies, and incident handling.

Recommendations

  1. Implement comprehensive privacy and cookie policies with user consent mechanisms to ensure GDPR compliance.
  2. Add security headers like Content-Security-Policy, X-Frame-Options, and X-XSS-Protection to strengthen site security.
  3. Publish incident response and vulnerability disclosure information to improve transparency and trust.
  4. Regularly audit third-party scripts and plugins for vulnerabilities and update them promptly.
  5. Enhance accessibility features to meet WCAG standards and improve user experience for all visitors.

Contact details published on the site

Addresses
Legal name
KNOWLIMITS Group a.s.
VAT number
CZ699004959
Registration number
24179396
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
KNOWLIMITS Group a.s.
Description
KNOWLIMITS is the largest independent Czech communication group offering tailored data-driven marketing and media solutions across multiple channels with expertise from strategy to creative execution. The group operates in 15 European markets with over 250 experts and achieved a turnover of 4 billion CZK in 2024.
Key services
Strategy and consulting, Media planning and buying, Digital and social media, Creative and production, Instore and retail, Data and research, PR and events
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.3, Yoast SEO plugin, Bootstrap 5, jQuery 3.7.1, Google Tag Manager
Frameworks
Bootstrap
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager for analytics

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF detected
  2. Content is in Czech with English alternate available
  3. No privacy or cookie policy pages found
  4. Contact info is clearly presented with company address, phone, and email
  5. Multiple subsidiary brands are showcased with SVG logos
  6. Uses modern web technologies and SEO best practices
  7. No forms detected on the homepage or footer
  8. Social media presence on LinkedIn and Instagram
  9. No explicit security or incident response policies published
Technical notes

Notes

The website uses a modern WordPress CMS with Bootstrap 5 for responsive design and jQuery for scripting. Google Tag Manager is integrated for analytics and marketing tracking. The site loads external fonts from Google Fonts and Adobe Typekit, enhancing typography. Performance is moderate with no major issues detected, and mobile optimization is good. SEO is supported by Yoast SEO plugin with proper meta tags and structured data in JSON-LD format. The site lacks advanced security headers and explicit privacy/cookie management scripts. Hosting provider details are not evident from the HTML content. Overall, the technical infrastructure is solid but could benefit from enhanced security and privacy features.
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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