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Security report for lengow.com

Lengow SAS · E-commerce · France

Medium risk. 6 critical or high findings in Security headers and SSL/TLS.

Security score

72/100

Risk levelMedium

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

Lengow SAS is a French-based company specializing in intelligent e-commerce solutions designed to accelerate online revenue growth by optimizing product visibility, pricing strategies, reseller monitoring, and marketplace sales. With over 15 years of experience and a customer base exceeding 3600 brands and retailers worldwide, Lengow positions itself as a significant player in the e-commerce SaaS market. Their product suite includes NetAmplify, NetMarkets, NetRivals, and NetMonitor, catering to diverse e-commerce needs from ads feed management to reseller network intelligence. Technically, the website is built on WordPress with modern JavaScript libraries and frameworks such as AngularJS and GSAP for animations. It integrates multiple marketing and analytics platforms including HubSpot, Segment, and Axeptio for cookie consent management. The site demonstrates excellent performance, mobile optimization, and SEO practices, reflecting a mature digital infrastructure. From a security perspective, the site enforces HTTPS and employs cookie consent mechanisms, but lacks explicit security policies, incident response contacts, and vulnerability disclosure information. No critical vulnerabilities or exposed sensitive data were detected. The absence of WHOIS data for the domain introduces some uncertainty regarding domain registration transparency, although the website content and business information strongly support legitimacy. Overall, Lengow presents a professional, trustworthy, and technically sound online presence with minor areas for improvement in security transparency and domain registration clarity. Strategic recommendations include enhancing security header implementation, publishing security policies, and verifying domain registration details to bolster trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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

6 findings rated critical or high. Fix these first.

  1. 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';…

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 20 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching lengow.com

This scan found 18 issues across 5 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.

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Full report

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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
42
Security headers
15
Email security
100
DNS health
90
Network security
100
GDPR outside view
83
Average
72

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

Lengow operates in the e-commerce sector, providing SaaS solutions that enable brands and retailers to optimize their digital sales channels. Their competitive advantages include a comprehensive product suite addressing multiple facets of e-commerce growth, a strong international presence across 70+ countries, and a robust customer base. Revenue streams likely derive from subscription fees for their platforms and professional services. Target customers include brands, retailers, agencies, and enterprise companies seeking to enhance online sales and marketplace management. The company demonstrates growth through extensive marketplace integrations and dynamic pricing capabilities. Partnerships with platforms like HubSpot and Segment enhance their marketing and analytics capabilities, supporting a sophisticated ecosystem. Operationally, Lengow emphasizes data-driven decision-making and automation to deliver measurable business outcomes for clients.

Security posture

The website exhibits a mature security posture with enforced HTTPS, cookie consent compliance, and use of reputable third-party analytics and marketing tools. However, the lack of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms indicates gaps in transparency and readiness. No critical vulnerabilities or exposed sensitive data were found, suggesting good operational security hygiene. Compliance with GDPR is supported by privacy and cookie policies with consent mechanisms. The absence of WHOIS data for the domain is a concern for domain registration transparency but does not directly impact website security. Overall, the security maturity is good but could be enhanced by publishing formal security documentation and incident response procedures to improve stakeholder confidence and regulatory compliance.

Recommendations

  1. Implement and publish comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear security policy and provide incident response contact information on the website.
  3. Establish a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Verify and disclose domain registration details to improve transparency and trustworthiness.

Contact details published on the site

Addresses
Legal name
Lengow SAS
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Lengow SAS
Description
Lengow provides intelligent e-commerce solutions to boost growth by enhancing product visibility, optimizing pricing, monitoring reseller networks, and increasing marketplace sales.
Key services
NetAmplify (Ads Feed Management), NetMarkets (Marketplace Management), NetRivals (Competitive Price Intelligence), NetMonitor (Reseller Network Intelligence), Professional Services
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Google Fonts, GSAP, Swiper, Slick Carousel, Bootstrap Multiselect, Segment Analytics, HubSpot, Axeptio (cookie consent), Albacross (tracking)
Frameworks
AngularJS (ng-app="app" attribute), GSAP animation framework
Platforms
HubSpot (marketing and chat), Segment (analytics)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Secure login forms with external trusted URLs

Analytics and tracking

Services
Google Analytics (via Segment), HubSpot Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
HubSpot, Segment, Albacross
Marketing tools
HubSpot, Segment, Axeptio (cookie consent)
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. No WAF or security challenge detected.
  3. WHOIS data is missing or unavailable, which is unusual for a .com domain.
  4. Strong presence of privacy and cookie policies with consent mechanisms.
  5. Multiple trusted third-party integrations for analytics and marketing.
  6. Clear business focus on e-commerce SaaS solutions with multiple product offerings.
  7. Contact information is clearly provided including phone, email, and physical address.
  8. No explicit security policy or incident response contact found.
  9. No vulnerability disclosure or security.txt file detected.
  10. Website uses modern technologies and frameworks with good performance and SEO.
Technical notes

Notes

The website is built on a WordPress CMS platform enhanced with modern JavaScript frameworks such as AngularJS and GSAP for dynamic content and animations. It leverages multiple third-party services including HubSpot for marketing automation, Segment for analytics, and Axeptio for cookie consent management. The site demonstrates fast loading times, excellent mobile responsiveness, and strong SEO optimization with proper meta tags and structured data. The use of CDN-hosted libraries and asynchronous script loading contributes to performance efficiency. Technical debt appears minimal with up-to-date libraries and a clean codebase. Opportunities for modernization include enhancing security header implementation and improving accessibility features. Overall, the technical infrastructure supports a robust and scalable e-commerce SaaS platform.
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

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