Is u21.de Safe? Security Analysis for Paulo Fernandes & André Kleegräfe GbR
https://u21.deCheck if u21.de is a scam or legitimate. Free security scan and reviews.
Below Technology avg (72)
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SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
AI Summary
U21 mediendesign is a small, owner-operated media design agency based in Hannover, Germany, founded in 1999. The company specializes in responsive web design, Typo3 CMS implementations, SEO, SEA, and app programming, targeting businesses seeking professional digital presence solutions in the Hannover region. Their market position is that of an established regional player with over two decades of experience, offering comprehensive digital services with a focus on quality and client trust. Technically, the website is built on TYPO3 CMS, leveraging modern web technologies such as jQuery, FontAwesome, Google reCAPTCHA, and Typekit fonts. The hosting is managed via kasserver.com, and the site demonstrates good mobile optimization, accessibility, and SEO practices. Performance is moderate, with room for optimization. The site includes a cookie consent mechanism and uses Matomo analytics with transparent data retention policies. From a security perspective, the site enforces HTTPS and uses reCAPTCHA for form protection. Cookie consent is granular and GDPR compliant. However, explicit security headers are not detected, and no dedicated security or incident response policies are published. No vulnerabilities or exposed sensitive data were found. The WHOIS data aligns with the business claims, showing a consistent domain age and hosting setup. Overall, the website presents a professional, trustworthy, and compliant digital presence with minor areas for security and technical enhancement. The risk level is low, with recommendations to improve security headers, publish security policies, and consider vulnerability disclosure mechanisms to further strengthen trust and compliance.
Detected Technologies
12 urgent findings need attention
2 critical · 10 high
- + 4 more findings in the full report below
Keep u21.de 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
25/100
GDPR Compliance
1 finding
95/100
NIS2 Compliance
8 findings
17/100
Email Security
3 findings
72/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
U21 mediendesign operates as a specialized service agency in the technology sector, focusing on web design and CMS solutions. Their competitive advantage lies in their long-standing regional presence and expertise in TYPO3 CMS, a complex and secure content management system favored by enterprises. Their business model is service-oriented, generating revenue through project-based engagements in web design, SEO, SEA, and app development. The target customers are primarily small to medium-sized businesses in the Hannover region seeking professional digital services. The company maintains a clear partnership ecosystem with hosting providers and uses open-source technologies. Growth indicators include a comprehensive portfolio and consistent branding. Strategic observations suggest focusing on expanding digital marketing services and enhancing security transparency to attract larger clients.
Extracted Contact Information
Marketing Intelligence Data
Physical Addresses (1)
Security Posture Analysis
Comprehensive Security Assessment
The security maturity of U21 mediendesign's website is moderate to good. HTTPS is enforced, and Google reCAPTCHA is implemented to protect forms from abuse. The cookie consent mechanism is GDPR compliant, providing users control over tracking and external content cookies. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options is a gap that could expose the site to certain web-based attacks. No incident response or security policy pages are published, which limits transparency and preparedness perception. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of Matomo analytics respects privacy better than many alternatives. Overall, the site demonstrates a solid baseline security posture with room for improvement in policy transparency and header implementation.
Strategic Recommendations
Priority Actions for Security Improvement
Implement security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Paulo Fernandes & André Kleegräfe GbR
U21 mediendesign ist eine 1999 gegründete und inhabergeführte Agentur aus Hannover mit den Schwerpunkten Responsive Webdesign, Typo3 CMS, SEO und SEA.
good
consistent
Technical Stack
moderate
excellent
good
good
Security Assessment
- HTTPS enforced (implied by base href https://)
- Use of Google reCAPTCHA on contact form
- Cookie consent banner with granular controls
- No exposed sensitive data in HTML
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with no blocking or WAF challenge.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing Strict-Transport-Security header
HIGHForces HTTPS connections
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing Content-Security-Policy header
HIGHControls resources the browser is allowed to load
Missing X-XSS-Protection header
MEDIUMLegacy XSS protection (deprecated but still recommended)
Missing Referrer-Policy header
LOWControls referrer information sent with requests
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
Sensitive data may be cached
LOWCache-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 Data Protection Officer mentioned
LOWLarge organizations may need to designate a DPO under GDPR
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
HIGHNIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
MEDIUMNIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
HIGHNIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
HIGHNIS2 requires documented incident response and business continuity plans
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity
No security contact information
HIGHNIS2 requires clear incident reporting channels
No vulnerability reporting mechanism
MEDIUMClear vulnerability reporting supports coordinated disclosure
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
No MTA-STS Policy
MEDIUMMTA-STS enforces TLS for email delivery
No TLS-RPT Record
LOWTLS-RPT provides reporting for email TLS issues
SPF Details
DMARC Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
Weak Protocols Supported
HIGHServer supports weak protocols: TLSv1.1
OCSP Stapling Not Enabled
LOWOCSP stapling improves performance and privacy
Certificate Transparency Not Implemented
LOWCertificate is not logged in Certificate Transparency logs
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 86 days
Mixed Content Detected
MEDIUM2 resources loaded over insecure HTTP
Partial SSL/TLS Assessment
LOWCompleted 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
MEDIUMDNSSEC is not configured for this domain
CAA Records Not Configured
LOWCertificate Authority Authorization (CAA) records not found
Domain Transfer Lock Not Enabled
MEDIUMDomain can be transferred without authorization
Domain Delete Lock Not Enabled
LOWDomain can be deleted without additional verification
Domain Registration Details
- •No domain protection locks enabled
DNS Records
DNSSEC Status
DNS Performance
SPF Analysis
⚡Network Security
Port scanning and network exposure analysis.
Network Security
Port scanning and network exposure analysis
High-Risk Service Exposed: FTP
HIGHPort 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer
Service Exposed: SSH
MEDIUMPort 22 (SSH) is publicly accessible - SSH - Secure but can be brute-forced
High-Risk Service Exposed: NetBIOS
HIGHPort 139 (NetBIOS) is publicly accessible - NetBIOS - Windows file sharing
Critical Service Exposed: SMB
CRITICALPort 445 (SMB) is publicly accessible - SMB - Windows file sharing, high risk
Critical Service Exposed: MySQL
CRITICALPort 3306 (MySQL) is publicly accessible - MySQL - Database server
How does u21.de compare?
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🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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PDF Report & Export
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Marketing Intelligence
Contact emails, phone numbers & warm leads
Plan Comparison
| Feature | PDF Report | Marketing+ |
|---|---|---|
| Full security analysis | ||
| Professional PDF export | ||
| Email delivery | ||
| Lifetime access + unlock code | ||
| Contact emails & phones | — | |
| Marketing outreach data | — |
Already purchased?
Order summary
Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.
Secure payments processed via EveryPay. Prices in EUR; Incl. 21% VAT.
SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
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