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Security report for realko.cz

swREALKO s.r.o. · Real Estate · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

59/100

Risk levelMedium

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

swREALKO s.r.o. operates the website realko.cz, offering a comprehensive real estate software solution tailored for small to large real estate agencies in the Czech Republic. The company provides multiple software versions including Free, Light, and Standard, alongside custom web development services integrated with their software. Their market position is strong as one of the most widespread real estate software providers in the region, supported by numerous partnerships with real estate portals. Technically, the website is built on ASP.NET WebForms with Telerik UI components and uses jQuery and Google Analytics for tracking. The site is mobile responsive and well-structured, though some modern security headers are missing. Security posture is adequate with HTTPS enabled and secure form handling, but could be improved with additional headers and cookie consent mechanisms. The absence of WHOIS data reduces domain trust but the website content and business information appear professional and credible. Overall, the site demonstrates a good balance of business functionality and technical implementation with room for security and privacy enhancements.

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

9 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 realko.cz

This scan found 24 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
82
Security headers
15
Email security
70
DNS health
75
Network security
100
GDPR outside view
10
Average
59

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 realko.cz, from OffSeq Breach.

Total records
2
Employees
0
Customers
2
Third parties
0
Weak passwords
100%

2 subdomains affected

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 realko.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

The company targets real estate agencies and brokers in the Czech market, offering SaaS-based real estate software and custom website creation. Their business model includes tiered software offerings and web services, generating revenue through subscriptions and service fees. The extensive partner ecosystem with many real estate portals enhances their market reach and integration capabilities. The company maintains clear contact channels and structured data for SEO and trust. Growth indicators include multiple software versions and a dedicated app portal. The business operates in a niche real estate technology sector with a small company size profile. Strategic observations suggest focusing on improving privacy compliance and security posture to maintain competitive advantage and regulatory adherence.

Security posture

The website employs HTTPS and secure ASP.NET form mechanisms, indicating a baseline security maturity. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options represents a gap that could expose the site to clickjacking, MIME sniffing, and other attacks. No incident response or security policy information is published, which may impact preparedness and transparency. The use of Google Analytics and Tag Manager introduces moderate user tracking, requiring clear privacy disclosures. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security posture is moderate but could benefit from enhanced headers, cookie consent, and published security policies to improve compliance and trust.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Add a cookie consent banner/mechanism to comply with GDPR and enhance user privacy transparency.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Regularly audit and update third-party libraries and scripts to mitigate vulnerabilities.
  5. Consider obtaining and displaying relevant security certifications or trust seals to boost credibility.

Contact details published on the site

Addresses
Legal name
swREALKO s.r.o.
Registration number
C 226436
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
swREALKO s.r.o.
Description
Program Realko je nejrozšířenější a nejpropracovanější realitní software pro malé i velké kanceláře a to i ve variantě ZDARMA. K Realku dostanete webové stránky, které můžeme vytvořit zcela na míru Vaší realitní kanceláři
Key services
Real estate software (Free, Light, Standard versions), Custom real estate websites, Integration with real estate portals, Technical support
Content quality
good
Branding
consistent

Technology

Stack
ASP.NET WebForms, jQuery 3.2.1, Google Analytics, Telerik UI components
Frameworks
ASP.NET
Platforms
Windows Server (implied by ASP.NET)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Secure form submission with ASP.NET viewstate and event validation

Analytics and tracking

Services
Google Analytics, 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. WHOIS data is unavailable, which is unusual and reduces domain trust.
  3. Website uses HTTPS and modern JavaScript libraries.
  4. Contact information is clearly provided with multiple channels.
  5. No privacy cookie banner detected, which may be a GDPR compliance gap.
  6. Website content is in Czech language targeting Czech real estate market.
  7. Multiple partner logos indicate integration with many real estate portals.
  8. Website uses ASP.NET WebForms technology with Telerik UI components.
  9. Google Analytics and Tag Manager are used for tracking.
  10. No explicit security headers detected in HTML content.
Technical notes

Notes

The website is built on a mature ASP.NET WebForms platform using Telerik UI components and jQuery 3.2.1. It integrates Google Analytics and Google Tag Manager for analytics and tracking. The site is mobile responsive with good SEO meta tags and structured data in JSON-LD format. Performance is moderate, with some room for optimization. Accessibility features are basic but present. The hosting provider is not explicitly identified. The site uses secure HTTPS connections but lacks modern security headers. The technical stack is stable but could be modernized to newer frameworks for improved maintainability and security. Overall, the technical infrastructure supports the business needs but should evolve to address emerging security and privacy requirements.
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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