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Security report for rebuyengine.com

Rebuy · E-commerce · N/a

Low risk. 4 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

76/100

Risk levelLow

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

Rebuy is a specialized ecommerce personalization platform primarily targeting Shopify merchants. It offers a suite of AI-driven tools including smart carts, merchandising widgets, dynamic bundles, and post-purchase monetization to enhance customer experience and increase revenue. The platform is well-positioned in the ecommerce SaaS market with a strong focus on data-driven shopping experiences and integration with major ecommerce and marketing platforms. Technically, the website is built on HubSpot CMS with modern analytics and marketing tools, showing a mature digital infrastructure with good performance and mobile optimization. Security posture is solid with HTTPS and cookie consent mechanisms, though explicit security headers and policies could be improved. The absence of WHOIS data is a notable concern, potentially indicating privacy protection or domain registration issues, which slightly impacts trustworthiness. Overall, the site demonstrates professionalism, strong branding, and a comprehensive product offering, making it a credible player in ecommerce personalization.

Scanned

This is an earlier scan of rebuyengine.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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

4 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 X-Frame-Options header

      Prevents clickjacking attacks

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

  2. GDPR outside view

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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  3. 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  4. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: k6loxto4elkezc6e3auwtmh4i5rme4kqxsysdl7vgw3hbcohro5q.mx-verification.google.com

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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

Keep watching rebuyengine.com

This scan found 17 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.

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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
75
Security headers
50
Email security
85
DNS health
75
Network security
100
GDPR outside view
68
Average
76

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

Rebuy operates in the ecommerce sector, focusing on Shopify merchants seeking to personalize and optimize their online stores. The business model is SaaS-based, providing modular solutions that scale with merchant needs. Key revenue streams likely include subscription fees and possibly revenue sharing via the Rebuy Monetize ad platform. The company leverages partnerships with leading marketing and ecommerce service providers to enhance its ecosystem. Growth indicators include a large customer base (45,000+ brands) and significant revenue powered through its platform. The company emphasizes AI and data-driven personalization as competitive advantages. Strategic observations suggest a focus on expanding product features and integrations to maintain market leadership.

Security posture

The website demonstrates a good security maturity level with enforced HTTPS and cookie consent compliance. However, there is no explicit security policy or incident response contact information publicly available, which is a gap in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of a security.txt or vulnerability disclosure page limits the ability for external security researchers to report issues. Compliance with GDPR is indicated through cookie banners and privacy policy. Overall, the security posture is solid but could be enhanced by publishing formal security policies and incident response procedures.

Recommendations

  1. Publish a detailed security policy and incident response contact information on the website.
  2. Implement and verify security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Create and maintain a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Verify and update WHOIS domain registration information to improve domain legitimacy and trust.
  5. Enhance transparency around data retention policies and user privacy practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Rebuy
Description
The world’s top brands use Rebuy’s personalization platform to fuel data-driven shopping experiences, win and keep more customers, and accelerate growth.
Key services
Smart Cart, Merchandising Widgets, Dynamic Bundles, Bundle Builder, Smart Search, Checkout Extensions, Post-Purchase Offers, Smart Flows, A/B Testing, Rebuy Monetize
Content quality
excellent
Branding
consistent

Technology

Stack
HubSpot CMS, Google Tag Manager, Google Analytics, Facebook Pixel, SVG graphics, JavaScript, CSS
Frameworks
HubSpot CMS
Platforms
Shopify
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Google Analytics, HubSpot Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Fluent
Tracking pixels
Facebook Pixel
Marketing tools
HubSpot
Transparency
good

Site quality

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

Key observations

  1. Website is a professional ecommerce personalization platform targeting Shopify merchants.
  2. Content is rich, well-structured, and includes detailed product and solution descriptions.
  3. Strong use of HubSpot CMS and marketing/analytics tools.
  4. No direct contact emails or phone numbers found on homepage content.
  5. Privacy and cookie policies are implemented with consent mechanisms.
  6. No visible security.txt or vulnerability disclosure page.
  7. WHOIS data is missing or unavailable, which is unusual and warrants caution.
Technical notes

Notes

The website is built on HubSpot CMS, leveraging modern JavaScript libraries and SVG graphics for a responsive and visually appealing design. Integration with Google Tag Manager, Google Analytics, and Facebook Pixel indicates mature marketing and analytics capabilities. The site is optimized for mobile devices and demonstrates fast loading times. Technical debt appears minimal with clean HTML structure and no broken elements detected. Opportunities exist to improve security header implementation and to publish more comprehensive technical documentation for developers and security researchers.
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. 76/100 +1Low25 findingsView report
  2. 75/100Medium25 findingsView report
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