Is 1und1.com Safe? Security Analysis for 1&1 Telecommunication SE
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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 Telecommunication SE is a major German telecommunications provider offering a wide range of services including internet (DSL and fiber), mobile phone services, TV, and device sales. As a subsidiary of United Internet… Unlock the full Guard report to read the complete analysis.
Detected Technologies
Keep 1und1.com 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
Cancel anytime. Alerts sent to the contacts you choose. Unlock the full report to view historical timelines and alerts.
Security Headers
4 findings
65/100
GDPR Compliance
5 findings
43/100
NIS2 Compliance
7 findings
25/100
Email Security
5 findings
70/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Snapshot shown below. Unlock the full AI report for complete market insights, audience profiling, and step-by-step recommendations.
Business Intelligence
Market & Strategic Analysis
1&1 operates in the telecommunications sector with a broad portfolio including DSL, fiber optic internet, mobile plans, TV services, and device sales such as smartphones and laptops. Its business model focuses on bundled offerings and value-added services like the 1&1 Service Card. The company targets both private consumers and business clients, leveraging its parent company United Internet AG's resources and sister company IONOS for domain and hosting services. 1&1's market position is reinforced by numerous industry awards and a strong brand presence. The website's content and navigation reflect a well-structured approach to customer engagement and product promotion, supported by extensive use of analytics and marketing technologies.
Extracted Contact Information
Marketing Intelligence Data
Physical Addresses (1)
Security Posture Analysis
Comprehensive Security Assessment
The security posture of 1&1's website shows a mix of strengths and weaknesses. While SPF and DMARC records are properly configured and there is no indication of subdomain takeover vulnerabilities, the SSL/TLS configuration is currently invalid with no active protocols enabled, no HSTS, no OCSP stapling, and no session resumption. These gaps significantly reduce the security level of the site and expose users to potential risks. The company maintains comprehensive privacy and cookie policies with user consent mechanisms, indicating good compliance with GDPR. However, the absence of a public security policy or incident response information limits transparency. Overall, the security maturity is moderate but requires urgent improvements in SSL configuration and security headers.
Strategic Recommendations
Priority Actions for Security Improvement
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Some header findings are shown. Unlock to see the full checklist, impacted endpoints, and remediation guidance.
Security Headers
HTTP security headers analysis
Weak Strict-Transport-Security configuration
LOWCurrent value: "max-age=15552001; includeSubDomains" Unlock the full report to read the complete fix.
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks Unlock the full report to read the complete fix.
Weak X-XSS-Protection configuration
LOWCurrent value: "0" Unlock the full report to read the complete fix.
Missing Permissions-Policy header
MEDIUMControls browser features and APIs Unlock the full report to read the complete fix.
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
Preview of GDPR checkpoints is visible. Unlock to reveal full evidence, policy excerpts, and DPIA guidance.
GDPR Compliance
Privacy and data protection assessment
No Cookie Policy found
HIGHGDPR requires clear information about cookie usage Unlock the full report to read the complete fix.
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies Unlock the full report to read the complete fix.
Insufficient contact information
MEDIUMGDPR requires organizations to provide clear contact details Unlock the full report to read the complete fix.
No Data Protection Officer mentioned
LOWLarge organizations may need to designate a DPO under GDPR Unlock the full report to read the complete fix.
Privacy policy may not be GDPR compliant
MEDIUMPrivacy policy lacks explicit GDPR compliance elements Unlock the full report to read the complete fix.
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
You can see headline NIS2 checks. Upgrade to access the full control mapping, severity breakdown, and remediation plan.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
HIGHNIS2 requires documented cybersecurity and information security measures Unlock the full report to read the complete fix.
No vulnerability disclosure policy
MEDIUMNIS2 encourages coordinated vulnerability disclosure Unlock the full report to read the complete fix.
No security policy documentation found
HIGHNIS2 requires documented cybersecurity governance and risk management Unlock the full report to read the complete fix.
No incident response procedures found
HIGHNIS2 requires documented incident response and business continuity plans Unlock the full report to read the complete fix.
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity Unlock the full report to read the complete fix.
No security contact information
HIGHNIS2 requires clear incident reporting channels Unlock the full report to read the complete fix.
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts Unlock the full report to read the complete fix.
📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Quick view of email authentication checks is provided. Unlock to uncover full DNS evidence, record diffs, and fix scripts.
Email Security
SPF, DKIM, and DMARC validation
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails Unlock the full report to read the complete fix.
Strict DMARC Alignment
LOWStrict alignment may cause legitimate emails to fail Unlock the full report to read the complete fix.
No BIMI Record
LOWBIMI displays brand logos in email clients Unlock the full report to read the complete fix.
No MTA-STS Policy
MEDIUMMTA-STS enforces TLS for email delivery Unlock the full report to read the complete fix.
No TLS-RPT Record
LOWTLS-RPT provides reporting for email TLS issues Unlock the full report to read the complete fix.
SPF Details
DMARC Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
This is a teaser of the TLS audit. Unlock to view certificate chains, cipher support tables, and remediation steps.
SSL/TLS Security
Certificate validity and encryption analysis
Mixed Content Detected
MEDIUM3 resources loaded over insecure HTTP Unlock the full report to read the complete fix.
OCSP Status
📊DNS Health
DNS configuration and security assessment.
Unlock the full DNS posture audit to reveal misconfigurations, zone records, and actionable fixes.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain Unlock the full report to read the complete fix.
CAA Records Not Configured
LOWCertificate Authority Authorization (CAA) records not found Unlock the full report to read the complete fix.
DNS Records
DNSSEC Status
DNS Performance
SPF Analysis
⚡Network Security
Port scanning and network exposure analysis.
See a glimpse of exposed services. Unlock to access full port inventories, CVE lookups, and mitigation priorities.
Network Security
Port scanning and network exposure analysis
Good Network Security Posture
LOWNo unnecessary services detected on common risky ports Unlock the full report to read the complete fix.
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Unlock to view the complete technical breakdown, stack fingerprinting, and hardening checklist.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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