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Security report for sendinblue.com

Brevo · Technology · United States

Low risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

78/100

Risk levelLow

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

Brevo is a technology company offering a comprehensive SaaS platform that integrates email marketing, SMS, WhatsApp messaging, marketing automation, sales pipeline management, and customer data platform capabilities. Positioned as a competitive player in the marketing automation and CRM space, Brevo targets businesses seeking to grow through multi-channel communication and data-driven marketing. The website reflects a mature digital presence with professional branding and consistent content quality. Technically, Brevo employs modern web technologies including React and Next.js frameworks, supported by a WordPress backend for corporate content. The site is optimized for performance, mobile responsiveness, and SEO, leveraging multiple analytics and marketing tools such as Google Analytics, Microsoft Clarity, AB Tasty, and others. Privacy compliance is well addressed with comprehensive privacy and cookie policies and active consent mechanisms. From a security perspective, the website enforces HTTPS, implements key security headers, and avoids exposing sensitive data. However, it lacks a dedicated security policy page and explicit incident response contact information, which are recommended for enhanced trust and compliance. The absence of WHOIS data for the domain raises some concerns about transparency, though the overall site professionalism and certifications like B Corp support legitimacy. Overall, Brevo presents a strong business and technical profile with good security posture, though improvements in domain registration transparency and security communication are advised to further strengthen trust and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
100/ 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

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 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 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

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

Keep watching sendinblue.com

This scan found 15 issues across 4 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

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

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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
15
Email security
100
DNS health
80
Network security
100
GDPR outside view
100
Average
78

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

Brevo operates in the technology sector, providing essential marketing and sales automation tools to a broad business audience. Its SaaS business model focuses on recurring revenue through subscription plans for marketing platform, sales platform, and customer data platform services. The company leverages a multi-channel approach including email, SMS, WhatsApp, and push notifications to differentiate itself. Strategic partnerships and integrations with analytics and marketing tools enhance its ecosystem. The presence of B Corp certification indicates a commitment to social and environmental responsibility. Growth indicators include a well-structured website with extensive product offerings and active social media engagement. The company targets medium to large businesses seeking scalable marketing automation solutions.

Security posture

Brevo demonstrates a mature security posture with HTTPS enforcement, comprehensive security headers, and cookie consent compliance. The use of modern frameworks and third-party security and analytics tools suggests ongoing attention to security and privacy. However, the lack of a public security policy and incident response contacts limits transparency and preparedness communication. No vulnerabilities or exposed sensitive data were detected in the analysis. GDPR compliance is indicated by privacy and cookie policies. The domain's WHOIS privacy protection or missing data is a minor concern but may be justified for security reasons. Overall, Brevo's security posture is strong but could be improved by publishing explicit security governance documentation and incident response details.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Consider publishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Increase transparency in domain registration information if possible to improve trust.
  5. Regularly review and update privacy and cookie policies to maintain GDPR and other compliance.

Contact details published on the site

Addresses
Legal name
Brevo
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Brevo
Description
Grow your business with Brevo, the Email Marketing Platform that goes beyond emails with SMS, chat, and more.
Key services
Email marketing, SMS & WhatsApp messaging, Marketing automation, Sales pipeline management, Customer data platform
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, Vimeo player, Google Tag Manager, Microsoft Clarity, AB Tasty, Albacross, Bing Ads, Google Analytics, OneTrust Cookie Consent
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • Cookie consent mechanism
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Analytics, Microsoft Clarity, PlanHat Analytics, LinkedIn Insight Tag, Bing Ads
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Bing Ads
Tracking pixels
Microsoft Clarity, AB Tasty, Albacross, LinkedIn Insight Tag
Marketing tools
AB Tasty, PlanHat Analytics
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 no blocking or WAF challenges
  2. Comprehensive marketing and sales platform offerings
  3. Strong use of modern web technologies and analytics
  4. Good privacy and cookie compliance with consent mechanisms
  5. No direct security policy or incident response contact found
  6. WHOIS data unavailable, indicating privacy protection or recent registration
  7. Professional branding and consistent content quality
  8. Extensive use of third-party marketing and tracking tools
Technical notes

Notes

The website is built on a modern tech stack including React and Next.js, ensuring fast performance and good SEO. The corporate backend uses WordPress, likely for content management. The site integrates multiple analytics and marketing tools such as Google Analytics, Microsoft Clarity, AB Tasty, and others, enabling extensive user tracking and marketing optimization. Mobile optimization and accessibility are well implemented. Security headers and HTTPS configuration are robust. The use of third-party scripts is extensive but managed with consent mechanisms. Technical risks include reliance on multiple external scripts which require ongoing monitoring for vulnerabilities. Overall, the technical infrastructure is modern, performant, and well maintained.
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. 77/100Low22 findingsView report
  2. 77/100 +13Low22 findingsView report
  3. 64/100Medium25 findingsView report
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