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Security report for sendinblue.com

Brevo · Technology · United States

Low risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

77/100

Risk levelLow

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

Brevo is a large technology company specializing in an all-in-one AI-enabled marketing platform that integrates email marketing, CRM, SMS, WhatsApp, chat, and more. It serves over 500,000 customers globally, positioning itself as a competitive alternative to established platforms like HubSpot and Mailchimp. The company offers multiple product lines including Marketing, Sales, Customer Data, Loyalty, Messaging API, and Conversations platforms, targeting businesses seeking comprehensive customer engagement solutions. Technically, Brevo employs a modern web infrastructure leveraging React and Next.js frameworks, with integrations of various analytics and marketing tools such as Google Tag Manager, Bing Ads, LinkedIn Insight Tag, AB Tasty, and Albacross. The website demonstrates excellent performance, mobile optimization, and SEO practices, supported by a WordPress backend for content management. From a security perspective, the site enforces HTTPS, implements key security headers, and avoids exposing sensitive data. However, it lacks publicly available security policies and incident response information, which could be improved. The absence of WHOIS registration data introduces a minor trust concern, although the professional web presence and certifications like B Corp support legitimacy. Overall, Brevo presents a mature, professional, and trustworthy digital presence with strong business credibility and technical sophistication. Strategic improvements in transparency around security policies and domain registration details would further enhance trust and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
85/ 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

5 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. GDPR outside view

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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  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

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

Keep watching sendinblue.com

This scan found 15 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.

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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
85
Network security
100
GDPR outside view
85
Average
77

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 SaaS technology sector, focusing on marketing automation and CRM solutions. Its market positioning is strong, with a large customer base and multiple product offerings that cover the entire customer engagement lifecycle. The business model is subscription-based SaaS, targeting small to enterprise businesses globally. Revenue streams likely include tiered subscriptions, enterprise solutions, and API usage fees. The company maintains an active partnership and integration ecosystem with over 150 digital tools. Growth indicators include extensive customer testimonials, awards, and a consistent brand presence across multiple languages and regions. The company emphasizes AI-driven features to differentiate itself in a competitive market.

Security posture

Brevo demonstrates a solid security posture with HTTPS enforcement and comprehensive security headers. The website avoids exposing sensitive information and uses secure forms. However, there is no publicly disclosed security policy or incident response contact, which are important for transparency and compliance. No vulnerabilities or outdated libraries were detected in the provided content. GDPR compliance is indicated through privacy and cookie policies with consent mechanisms. The lack of WHOIS transparency is a minor risk factor but does not currently indicate malicious intent. Overall, the security maturity is good but could benefit from enhanced disclosure and vulnerability management transparency.

Recommendations

  1. Publish a detailed security policy and incident response plan on the website to improve transparency and trust.
  2. Implement and publicly link a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide clear contact information for the Data Protection Officer or privacy team to enhance GDPR compliance.
  4. Clarify domain registration details or use verified WHOIS data to improve domain legitimacy perception.
  5. Continue to monitor and update third-party scripts and tracking tools to minimize privacy risks and maintain 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
Marketing Platform, Sales Platform, Customer Data Platform, Loyalty Platform, Messaging API, Conversations Platform
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, Vimeo embed, Google Tag Manager, Bing Ads, LinkedIn Insight Tag, AB Tasty, Albacross
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure forms with proper input fields

Analytics and tracking

Services
Google Analytics (via GTM), Planhat, Albacross
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Bing Ads
Tracking pixels
LinkedIn Insight Tag, Albacross, AB Tasty
Marketing tools
AB Tasty, Planhat
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. Strong branding and consistent messaging across pages
  3. Comprehensive product and resource offerings
  4. Active social media presence with verified accounts
  5. Use of modern web technologies and analytics tools
  6. No signs of malicious or suspicious content
  7. WHOIS data missing, which is a minor trust concern
Technical notes

Notes

The website is built on a modern tech stack including React and Next.js, ensuring fast performance and good SEO. It integrates multiple third-party analytics and marketing tools, which provide extensive data collection and user tracking capabilities. The site is mobile-optimized and accessible, with a clean and professional design. The use of WordPress for backend content management is typical for marketing sites. No technical debt or legacy technology was observed. Opportunities exist to enhance hosting transparency and possibly improve accessibility features further. Overall, the technical infrastructure supports a scalable and robust digital presence.
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. 77/100 −1Low22 findingsView report
  2. 78/100 +14Low22 findingsView report
  3. 64/100Medium25 findingsView report
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