Skip to main content

Security report for crestyl.com

Crestyl · Real Estate · Czech Republic

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

53/100

Risk levelMedium

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

Crestyl is a well-established real estate development company based in the Czech Republic, specializing in multi-sector projects including residential, office, and retail properties. The company positions itself as a market leader in Central and Eastern Europe, supported by multiple prestigious awards such as the CEEQA Awards 2025. Their website reflects a professional and consistent brand image, targeting investors, tenants, and clients interested in high-quality real estate projects. Technically, the website employs modern JavaScript libraries like jQuery and Leaflet, integrates Google Analytics and Tag Manager for tracking, and implements a comprehensive cookie consent mechanism. The site is mobile-optimized and accessible, with good SEO practices evident from meta tags and structured navigation. However, no CMS or hosting provider details are explicitly identified. From a security perspective, the site uses HTTPS and has implemented cookie consent controls, but lacks explicit security headers and published security policies. The domain WHOIS data is consistent with the business claims, showing a long registration history without privacy protection, which supports legitimacy. No critical vulnerabilities or exposed sensitive data were detected in the provided content. Overall, Crestyl's digital presence is professional and trustworthy, though improvements in privacy policy publication, security header implementation, and incident response transparency would enhance their security posture and compliance standing.

Scanned

This is an earlier scan of crestyl.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

7 findings rated critical or high. Fix these first.

  1. 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 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching crestyl.com

This scan found 26 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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
30
Email security
75
DNS health
70
Network security
20
GDPR outside view
50
Average
53

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 crestyl.com, from OffSeq Breach.

No leaked records found

Breach holds no records for crestyl.com 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

Crestyl operates as a large real estate developer with a focus on multi-purpose projects that integrate residential, office, and retail spaces. Their competitive advantage lies in their market leadership and recognition through awards, which bolster their brand credibility. The business model centers on property development and investment, targeting a mix of end-users and investors. The presence of a client portal and partnerships such as Spravia indicate a mature ecosystem supporting client engagement and operational efficiency. Growth indicators include recent awards and a broad portfolio across multiple locations. The company maintains active social media channels to engage stakeholders and promote transparency.

Security posture

The current security maturity level is moderate. The website enforces HTTPS and provides a cookie consent mechanism aligned with GDPR principles. However, the absence of a published privacy policy, terms of service, security policy, and incident response information indicates gaps in compliance and transparency. No security.txt or vulnerability disclosure program is evident, which limits external security collaboration. The lack of DNSSEC and security headers reduces DNS and web security robustness. No vulnerabilities or exposed sensitive data were found, but the security posture would benefit from enhanced header implementation, policy publication, and formal incident response channels.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Publish a comprehensive privacy policy and terms of service pages accessible from the website footer.
  3. Implement security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to harden web security.
  4. Establish and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Provide explicit security and incident response policies with contact channels to improve transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Crestyl
Description
Developerská skupina CRESTYL je lídrem trhu v budování víceúčelových projektů - rezidenčních, obchodních i kancelářských nemovitostí, které se propojují v jeden perfektně fungující a živý celek.
Key services
Residential development, Office space development, Retail space development
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.4.1, Leaflet 1.9.4, Google Analytics, Google Tag Manager, @superkoders/cookie 2.4.3
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by domain and scripts loaded via HTTPS)
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

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 challenges
  2. Content is primarily in Czech with some English language options
  3. Cookie consent banner is implemented with granular consent options
  4. No explicit privacy policy or terms of service pages found in the provided content
  5. Social media presence is strong with official Facebook, Instagram, LinkedIn, and YouTube links
  6. No contact emails or phone numbers explicitly found in the provided HTML content
  7. Business is a large real estate developer with a focus on multi-sector projects
  8. Technical implementation uses modern libraries and analytics tools
  9. No security.txt or vulnerability disclosure information found
  10. No explicit security headers detected in the provided data
Technical notes

Notes

The website uses a modern technology stack including jQuery 3.4.1 and Leaflet 1.9.4 for interactive maps, along with Google Analytics and Tag Manager for analytics and marketing. The cookie consent library @superkoders/cookie is used for GDPR compliance. The site is well-structured with proper meta tags for SEO and social media integration via Open Graph and Twitter cards. Performance is moderate with asynchronous script loading and video background usage. Mobile optimization and accessibility features are well implemented, including keyboard navigation aids and responsive design. No CMS or hosting provider details were detected, suggesting a custom or proprietary platform. Opportunities exist to improve technical security and privacy compliance through additional headers and policy disclosures.
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

Earlier scans of this domain

  1. 53/100Medium35 findingsView report
Reviews of this site

Share your experience with crestyl.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review crestyl.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.