Is century21.cz Safe? Security Analysis for CENTURY 21
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GDPR-aligned
Data handling
EU
Hosting region
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CENTURY 21 Czech Republic operates as a real estate brokerage and property listing service, offering a wide range of residential and commercial properties. The website presents a professional and modern interface targeting buyers, sellers, and real estate agents within the Czech market. The company emphasizes trust and partnership, with multiple property categories and career/franchise opportunities. Technically, the site leverages modern frameworks such as Next.js and React, and integrates analytics tools like Microsoft Clarity and Hotjar for user behavior insights. Security posture is strong with HTTPS and security headers implemented, though explicit privacy and cookie policies are not clearly found in the provided content. WHOIS data is unavailable, which reduces domain trust but the website content and branding suggest a legitimate business. Overall, the site is well-structured and user-friendly, but could improve transparency on privacy and contact information.
Detected Technologies
12 urgent findings need attention
1 critical · 11 high
- + 4 more findings in the full report below
Keep century21.cz under constant watch
Guard tracks your live infrastructure daily: certificate expiry, DNS & mail authentication drift, uptime changes, subdomain inventory, and unexpected tracker or content shifts. A full timeline captures every diff so you can prove remediation and spot regressions instantly.
Security drift alerts
Risk score drops, new high-severity issues, and header hardening gaps
Compliance watch
GDPR / NIS2 posture changes with governance evidence snapshots
Infrastructure surface
Unexpected open services, SSL expiry, DNS & email authentication changes
Content & tracker intelligence
Marketing tech shifts, analytics drift, and AI recommendation updates
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Security Headers
7 findings
30/100
GDPR Compliance
4 findings
25/100
NIS2 Compliance
9 findings
2/100
Email Security
2 findings
90/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
The company positions itself as a reliable real estate partner in the Czech Republic, with a medium-sized market presence. Its business model focuses on property sales, brokerage services, and franchising. The website targets property buyers, sellers, and prospective real estate agents. The presence of dedicated career and franchising portals indicates a growth strategy through network expansion. The company leverages partnerships with external project sites and promotes specialized real estate projects. Revenue streams likely include commissions from property sales and franchise fees. The website content is professionally curated, supporting a strong brand image and market credibility.
Security Posture Analysis
Comprehensive Security Assessment
The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and no visible exposure of sensitive data. The use of reputable analytics and tracking services is balanced with standard security practices. However, the absence of explicit privacy and cookie policies and lack of a vulnerability disclosure mechanism indicate gaps in compliance and transparency. Incident response contact information is not evident, which could hinder timely reporting of security issues. Overall, the site is secure but would benefit from enhanced privacy compliance and formal security communication channels.
Strategic Recommendations
Priority Actions for Security Improvement
Publish clear and comprehensive privacy and cookie policies with user consent mechanisms to improve GDPR compliance.
✨Observations
Comprehensive website and business-context analysis.
AI-Enhanced Website Analysis
Business Insights
CENTURY 21
Stovky nemovitostí na prodej každý den. To je realita.
good
consistent
Technical Stack
moderate
good
basic
good
Security Assessment
- HTTPS enforced
- Use of security headers
- No exposed sensitive data in HTML
- Secure forms with proper input fields
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with no blocking or WAF challenges.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing X-Frame-Options header
Prevents clickjacking attacks
Missing X-Content-Type-Options header
Prevents MIME type sniffing
Missing Content-Security-Policy header
Controls resources the browser is allowed to load
Missing X-XSS-Protection header
Legacy XSS protection (deprecated but still recommended)
Missing Referrer-Policy header
Controls referrer information sent with requests
Missing Permissions-Policy header
Controls browser features and APIs
Sensitive data may be cached
Cache-Control header should include "no-store" for sensitive pages
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Privacy Policy found
GDPR requires a clear and accessible privacy policy
No Cookie Consent Banner found
GDPR requires explicit consent for non-essential cookies
EU business without adequate privacy measures
EU businesses are subject to strict GDPR requirements
Third-party services without privacy policy
Detected services: Google Analytics, Facebook, Google APIs
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
NIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
NIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
NIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
NIS2 requires documented incident response and business continuity plans
No business continuity planning found
NIS2 emphasizes operational resilience and business continuity
No security contact information
NIS2 requires clear incident reporting channels
No vulnerability reporting mechanism
Clear vulnerability reporting supports coordinated disclosure
No NIS2 reference found
Consider explicitly mentioning NIS2 compliance efforts
Critical sector without clear security compliance
Detected sectors: energy, transport, digital
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
Complex SPF record
Too many include statements can cause lookup limits
No DMARC reporting
DMARC aggregate reports not configured
SPF Details
DKIM Selectors Found
DMARC Details
MTA-STS Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
Weak Protocols Supported
Server supports weak protocols: TLSv1.1
OCSP Stapling Not Enabled
OCSP stapling improves performance and privacy
Certificate Transparency Not Implemented
Certificate is not logged in Certificate Transparency logs
SSL Certificate Expires Within 90 Days
SSL certificate expires in 35 days
Mixed Content Detected
1 resources loaded over insecure HTTP
Partial SSL/TLS Assessment
Completed 3 of 4 security checks due to time constraints
Protocol Support
OCSP Status
📊DNS Health
DNS configuration and security assessment.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
DNSSEC is not configured for this domain
CAA Records Not Configured
Certificate Authority Authorization (CAA) records not found
Domain Registration Details
DNS Records
DNSSEC Status
DNS Performance
SPF Analysis
⚡Network Security
Port scanning and network exposure analysis.
Network Security
Port scanning and network exposure analysis
Good Network Security Posture
No unnecessary services detected on common risky ports
How does century21.cz compare?
See how century21.cz stacks up against similar websites in the same industry.
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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