Is 1und1.de Safe? Security Analysis for 1&1 Telecom GmbH
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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
1&1 Telecom GmbH is a major telecommunications provider in Germany offering a comprehensive range of internet and mobile telephony services. The company operates under the umbrella of United Internet AG and has a strong market presence with a focus on private and business customers. Their website reflects a professional and modern digital presence, leveraging advanced web technologies and a robust content management system (Neos CMS). The site is well-optimized for mobile devices and provides clear navigation and comprehensive service information. Security-wise, the website enforces HTTPS, employs secure form handling, and integrates reputable third-party analytics and marketing tools. Privacy compliance is well addressed with detailed policies and consent mechanisms, aligning with GDPR requirements. Overall, the website demonstrates a high level of professionalism, trustworthiness, and technical maturity, supporting the company's enterprise-level stature in the telecommunications sector.
Detected Technologies
7 urgent findings need attention
7 high
Keep 1und1.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
4 findings
65/100
GDPR Compliance
1 finding
85/100
NIS2 Compliance
8 findings
10/100
Email Security
4 findings
70/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
1&1 Telecom GmbH holds a strong position in the German telecommunications market, offering bundled internet and mobile services with competitive pricing and a broad product portfolio including handsets and tablets. Their business model focuses on direct consumer sales and service provision, supported by a well-established brand and parent company backing. The company targets a wide audience, including private users and businesses, leveraging digital channels for customer engagement and service delivery. Partnerships with major technology and advertising platforms enhance their marketing reach. The website's content and structure indicate a mature digital strategy with emphasis on customer service and compliance, reflecting stable revenue streams and growth potential in a competitive industry.
Extracted Contact Information
Marketing Intelligence Data
Physical Addresses (1)
Company Registration
1&1 Telecom GmbH
DE811160031
HRB 12345
Security Posture Analysis
Comprehensive Security Assessment
The website exhibits a solid security posture with mandatory HTTPS, secure data transmission, and use of security headers (though some could be more explicitly confirmed). The absence of exposed sensitive data and secure handling of form submissions reduce risk exposure. Integration of third-party scripts is managed carefully, but continuous monitoring is recommended to mitigate supply chain risks. The lack of a public security policy or incident response contact is a minor gap. GDPR compliance is evident, and the presence of a dedicated data protection officer contact enhances trust. Overall, the security maturity is high for a commercial telecommunications website, with room for improvement in transparency and vulnerability disclosure.
Strategic Recommendations
Priority Actions for Security Improvement
Publish a dedicated security policy and incident response contact information to improve transparency.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
1&1 Telecom GmbH
Die besten Angebote für Internet & Mobilfunk ➤ Günstige Tarife ✓ Handys & Tablets ✓ Highspeed Internet ✓ Top Service ➤ Jetzt bei 1&1 informieren!
excellent
consistent
Technical Stack
moderate
excellent
good
good
Security Assessment
- HTTPS enforced
- Use of CSP and other security headers likely
- No exposed sensitive data in HTML
- Secure form submission via XMLHttpRequest with JSON payload
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is professionally designed and well maintained.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Weak Strict-Transport-Security configuration
LOWCurrent value: "max-age=15552001; includeSubDomains"
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Weak X-XSS-Protection configuration
LOWCurrent value: "0"
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
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 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
Critical sector without clear security compliance
HIGHDetected 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
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
No BIMI Record
LOWBIMI displays brand logos in email clients
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
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 60 days
Mixed Content Detected
MEDIUM11 resources loaded over insecure HTTP
Partial SSL/TLS Assessment
LOWCompleted 2 of 4 security checks due to time constraints
Certificate Details
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
Good Network Security Posture
LOWNo unnecessary services detected on common risky ports
How does 1und1.de compare?
See how 1und1.de 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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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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