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Security report for newsletter2go.com

Brevo · Technology · Germany

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

Security score

78/100

Risk levelLow

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

Brevo operates as a technology company specializing in email marketing and newsletter management services, including providing login portals for Newsletter2go users. The website is professionally designed, targeting business customers and marketers seeking email marketing solutions. It leverages modern web technologies such as WordPress, React, and Yoast SEO to deliver a functional and SEO-optimized user experience. The site integrates with partner domains like newsletter2go.de and sendinblue.com, indicating a collaborative ecosystem. However, the absence of WHOIS data for the domain www.brevo.com raises concerns about domain registration transparency, although the website content and contact information appear legitimate and professional. From a technical perspective, the website uses a modern tech stack with React and WordPress CMS, ensuring good mobile optimization and SEO practices. Performance is moderate, with no detected blocking or WAF challenges. Security posture is decent with HTTPS enforced and secure login forms, but lacks visible security headers and cookie consent mechanisms, which are recommended for enhanced compliance and protection. Security evaluation shows no immediate vulnerabilities or exposed sensitive data, but the lack of explicit security policies and incident response contacts suggests room for improvement in security governance. Privacy compliance is partially met with a clear privacy policy and terms of service linked, but cookie consent and GDPR explicit indicators are missing. Overall, the website is trustworthy and professional but would benefit from improved transparency and security best practices. Strategically, Brevo should focus on enhancing domain registration transparency, implementing comprehensive security headers, and deploying cookie consent mechanisms to improve privacy compliance. These steps will strengthen user trust and align with regulatory requirements, supporting Brevo's position as a reliable email marketing service provider.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

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

  2. GDPR outside view

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

    • 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

    • 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

    • 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 newsletter2go.com

This scan found 14 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
55
Email security
100
DNS health
85
Network security
100
GDPR outside view
50
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention newsletter2go.com, from OffSeq Breach.

Total records
1,049
Employees
1
Customers
1,048
Third parties
0
Weak passwords
7%

Latest record dated 2025-04-20 · 9 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for newsletter2go.com.

Select it in the checkout above.

Masked preview

  • –ui.newsletter2go.com2025-04-20

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

Brevo holds a strong position in the email marketing technology sector, offering SaaS solutions primarily targeting businesses and marketers. The integration with Newsletter2go and Sendinblue brands suggests a strategic partnership ecosystem that enhances service offerings and market reach. The business model revolves around subscription-based access to marketing tools and customer portals. Revenue streams likely include paid plans for email campaigns and marketing automation. The company targets medium to large enterprises requiring scalable marketing solutions. Growth indicators include continuous website updates and integration of modern technologies. The partnership with Newsletter2go indicates a collaborative approach to expanding market share. Strategic observations highlight the importance of improving domain registration transparency and privacy compliance to maintain competitive advantage and customer trust.

Security posture

Brevo demonstrates a moderate security maturity level with HTTPS enforced and secure login forms. No critical vulnerabilities or exposed sensitive data were detected in the website content. However, the absence of security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces the overall security posture. Privacy compliance is partial, with a privacy policy present but lacking cookie consent mechanisms and explicit GDPR indicators. Incident response readiness is not evident from the website content, with no dedicated security contact channels found. The security culture could be enhanced by publishing clear security policies and vulnerability disclosure programs. Overall, the security posture is adequate for business operations but requires improvements to meet higher compliance and protection standards.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Deploy a cookie consent banner and mechanism to comply fully with GDPR and other privacy regulations.
  3. Publish explicit security policies and incident response contact information to improve transparency and readiness.
  4. Conduct regular audits of third-party scripts and plugins to identify and mitigate potential vulnerabilities.
  5. Enhance accessibility features to improve user experience for all visitors, including those with disabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Brevo
Description
Brevo provides email marketing and newsletter services, including login access for Newsletter2go users. The site supports account management and customer support for these services.
Key services
Email marketing, Newsletter management, Customer login portal
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Yoast SEO Premium, jQuery, React, Lodash
Frameworks
React
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Secure login form with password input

Analytics and tracking

Services
Cloudflare Insights
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Cloudflare Insights
Marketing tools
Yoast SEO, Better Click To Tweet, Contact Form 7
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is business-focused on email marketing and login services.
  3. WHOIS data is missing, which is a concern for domain legitimacy.
  4. No explicit privacy or cookie consent banners found on the page.
  5. Contact email is provided and appears legitimate.
  6. Use of modern web technologies and SEO best practices.
  7. No security headers detected in provided data; recommend improvement.
  8. No phone numbers or physical addresses explicitly found on this page.
  9. No social media links explicitly found in the HTML content.
Technical notes

Notes

The website is built on WordPress CMS with integration of React and jQuery libraries, indicating a hybrid modern and legacy tech stack. SEO is enhanced using Yoast SEO Premium plugin, and marketing tools like Better Click To Tweet and Contact Form 7 are employed. Performance is moderate with deferred loading of scripts and use of CDN assets. Mobile optimization is good, but accessibility is basic and could be improved. No hosting provider information was detected from the content. The site uses HTTPS with a good SSL configuration but lacks security headers. The technical infrastructure supports a professional business website but has opportunities for modernization and security hardening to reduce technical debt and operational risks.
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 −1Low24 findingsView report
  2. 78/100Low21 findingsView report
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