Is circl.lu Safe? Security Analysis for Computer Incident Response Center Luxembourg (CIRCL)
https://circl.luCheck if circl.lu is a scam or legitimate. Free security scan and reviews.
Above Government avg (70)
10,000+
Domains scanned
500+
Security teams trust us
EveryPay
Secure checkout
Instant
Reports delivered
Get the professional PDF report for circl.lu
Export this security analysis as a professional PDF document, receive it via email, and access marketing intelligence data including contact emails and phone numbers. One-time purchase for lifetime access.
PDF Report & Export
PDF download, email delivery, unlock code
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
AI Summary
The Computer Incident Response Center Luxembourg (CIRCL) is a government-driven cybersecurity entity serving as the national CERT/CSIRT for Luxembourg's private sector, communes, and non-governmental organizations. CIRCL provides a broad range of cybersecurity services including threat intelligence sharing via the MISP platform, dynamic malware analysis, passive DNS historical data, and document sanitization from untrusted USB devices. The organization maintains a strong market position as a trusted government-affiliated cybersecurity resource with a history dating back to 2008 and operates under the Luxembourg House of Cybersecurity (LHC). The website reflects a professional and authoritative presence with comprehensive security advisories and publications.
Detected Technologies
4 urgent findings need attention
1 critical · 3 high
Keep circl.lu 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
75/100
GDPR Compliance
5 findings
28/100
NIS2 Compliance
3 findings
77/100
Email Security
5 findings
60/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
CIRCL operates primarily in the government and technology sectors, targeting private and public entities within Luxembourg. Its business model focuses on providing incident response, threat intelligence sharing, and cybersecurity services to enhance national cyber resilience. The organization benefits from strong trust indicators including government backing, active publication of vulnerability disclosures, and integration with recognized cybersecurity frameworks. CIRCL's partnership ecosystem includes the Luxembourg House of Cybersecurity and related national initiatives. The website's content and service offerings indicate a mature and well-established operation with a clear focus on cybersecurity community support and collaboration.
Security Posture Analysis
Comprehensive Security Assessment
CIRCL demonstrates a mature security posture with enforced HTTPS, PGP signatures for content integrity, and a clear focus on vulnerability disclosure and incident response. The website does not expose sensitive data and maintains a TLP:CLEAR classification for its content, promoting transparency. However, there is room for improvement in publishing explicit security policies, incident response contact channels, and implementing comprehensive security headers. No critical vulnerabilities or security issues were detected in the website content. The absence of cookie consent mechanisms and detailed privacy compliance documentation suggests minor compliance gaps that could be addressed to enhance trust and regulatory adherence.
Strategic Recommendations
Priority Actions for Security Improvement
Implement and display a cookie policy with a user consent mechanism to comply with privacy regulations.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Computer Incident Response Center Luxembourg (CIRCL)
The Computer Incident Response Center Luxembourg (CIRCL) is a government-driven initiative designed to gather, review, report and respond to computer security threats and incidents. CIRCL is the CERT for the private sector, communes and non-governmental entities in Luxembourg.
excellent
consistent
Technical Stack
moderate
good
basic
good
Security Assessment
- HTTPS enforced (implied by URL)
- PGP signature for page verification
- TLP:CLEAR content classification
- No exposed sensitive data in HTML
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with no blocking or WAF challenges.
Get this report delivered to your inbox
Receive a summary of the circl.lu security findings by email. Quick and easy to share with decision makers.
🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Weak Strict-Transport-Security configuration
LOWCurrent value: "max-age=15768000"
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 Cookie Policy found
HIGHGDPR requires clear information about cookie usage
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
No Data Protection Officer mentioned
LOWLarge organizations may need to designate a DPO under GDPR
Privacy policy may not be GDPR compliant
MEDIUMPrivacy policy lacks explicit GDPR compliance elements
EU business without adequate privacy measures
CRITICALEU businesses are subject to strict GDPR requirements
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity
No security contact information
HIGHNIS2 requires clear incident reporting channels
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
Need this report as a PDF?
Download the complete circl.lu security analysis as a professional PDF. Share it with your team, clients, or stakeholders.
📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
DMARC not enforcing
MEDIUMDMARC policy is set to "none"
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
Mixed Content Detected
MEDIUM4 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
DMARC Policy Set to None
LOWDMARC is configured but not enforcing any policy
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
LOWNo unnecessary services detected on common risky ports
How does circl.lu compare?
See how circl.lu 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
Download the circl.lu report as PDF
Get the complete analysis in a shareable PDF format, delivered instantly to your email with lifetime access.
PDF Report & Export
PDF download, email delivery, unlock code
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
Scan your own website
Liked the circl.lu report? Run the same comprehensive security analysis on your domain — free, instant, and no sign-up required.
Or browse our directory of >10,000 scanned websites.
How did we do?
Your feedback directly shapes our roadmap. Rate the quality of this report, leave an optional comment, and let us know if you want our security specialists to follow up.
What others say about circl.lu
Share your experience to help others make informed decisions. We verify every review by email and publish it once our moderation team approves it.
Community rating
—out of 5
0 reviews published