Skip to main content

Security report for lightbulb.lu

Lightbulb s.à r.l. · Technology · Luxembourg

High risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

46/100

Risk levelHigh

0–100, higher is better. How it is calculated

Lightbulb s.à r.l. is a Luxembourg-based digital design and software development agency founded in 2013. The company specializes in transforming complex problems into user-friendly software solutions, offering services such as custom development, UX-focused design, and innovative digital solutions. Their client portfolio includes notable organizations, and they maintain an active social media presence to engage with their audience. The website is professionally designed, mobile-optimized, and provides clear navigation and contact information, positioning Lightbulb as a credible and trustworthy service provider in the technology sector. Technically, the website is built on WordPress, leveraging modern JavaScript and CSS technologies, with performance optimized through caching and preload strategies. Hosting is managed via EuroDNS, consistent with the Luxembourg location. The site employs Matomo analytics with a cookie consent mechanism, reflecting a moderate level of digital maturity and privacy awareness. Accessibility and SEO optimizations are well implemented, contributing to a positive user experience. From a security perspective, the site enforces HTTPS and uses cookie consent to comply with GDPR requirements. However, explicit security headers are absent, and no formal privacy policy or security incident response information is published, indicating areas for improvement. No vulnerabilities or exposed sensitive data were detected in the analyzed content. Overall, the security posture is good but could be enhanced by adopting additional best practices and transparency measures. The overall risk assessment is low, with the website demonstrating professionalism, legitimacy, and compliance with basic privacy standards. Strategic recommendations include publishing a comprehensive privacy policy, implementing security headers, and providing clear incident response contacts to strengthen trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

9 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

Need hands-on remediation? Email guard@offseq.com

Keep watching lightbulb.lu

This scan found 25 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
72
Security headers
15
Email security
70
DNS health
75
Network security
20
GDPR outside view
25
Average
46

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Lightbulb operates as a specialized technology service provider focusing on custom software development and UX/UI design. Their market positioning is that of a boutique agency with a strong emphasis on quality and client collaboration. The business model revolves around project-based engagements with medium to large organizations, particularly in Luxembourg. Revenue streams likely derive from bespoke software projects, design services, and ongoing support. The company targets businesses requiring tailored digital solutions, emphasizing innovation and user experience. Growth indicators include a well-maintained portfolio, active social media channels, and a clear presentation of team expertise. The partnership ecosystem is not explicitly detailed but includes clients from government and private sectors. Strategic observations suggest a focus on maintaining high-quality standards and expanding service offerings to sustain competitive advantage.

Security posture

The website demonstrates a moderate to good security maturity level. HTTPS is enforced, ensuring encrypted communications. The presence of a cookie consent mechanism aligns with GDPR requirements, indicating awareness of privacy regulations. However, the absence of explicit security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security reduces the overall security robustness. No security policy or incident response contact information is published, which limits transparency and preparedness for security incidents. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of Matomo analytics with user consent reflects responsible data collection practices. Overall, the security culture appears positive but would benefit from formalizing policies and enhancing technical controls.

Recommendations

  1. Publish a comprehensive privacy policy detailing data processing and GDPR compliance.
  2. Implement standard security headers (Content-Security-Policy, X-Frame-Options, Strict-Transport-Security) to enhance protection.
  3. Provide clear security incident response contact information and consider publishing a security policy.
  4. Introduce a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Lightbulb s.à r.l.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Lightbulb s.à r.l.
Description
We transform complex problems into user-friendly software solutions by working closely with our clients to understand their needs
Key services
Custom Development, UX focused design, Innovative Solutions
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, JavaScript, CSS, Matomo Analytics
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Matomo
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with no blocking or WAF challenges
  2. Content is professionally presented with clear business focus
  3. Cookie consent mechanism is implemented and functional
  4. No privacy policy or terms of service pages found on homepage
  5. Contact information is clearly displayed in footer
  6. Social media presence is active and linked
  7. No explicit security headers detected in HTML content
  8. Matomo analytics used with user consent
  9. No forms detected on homepage; contact likely via contact page
Technical notes

Notes

The website is built on WordPress CMS, utilizing modern JavaScript and CSS with performance optimizations such as caching and resource preloading. Hosting is provided by EuroDNS, consistent with the domain's Luxembourg registration. The site loads quickly and is mobile-optimized with good accessibility features. SEO is well addressed through meta tags, Open Graph, and structured JSON-LD data. Analytics are handled via Matomo with user consent, reflecting privacy-conscious data collection. No outdated or vulnerable libraries were detected in the provided content. Technical risks are minimal but could be further reduced by implementing security headers and formalizing privacy and security policies.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 46/100High33 findingsView report
Reviews of this site

Share your experience with lightbulb.lu. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review lightbulb.lu.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.