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Security report for newsletter2go.de

Brevo · Technology · Germany

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 operates as a technology company specializing in email marketing and newsletter services, integrating the Newsletter2go brand to serve German-speaking markets. The website provides login access and account creation for users, targeting businesses and marketers seeking efficient email marketing solutions. The company positions itself as an established player in the SaaS email marketing space with a professional and consistent brand presence. Technically, the website is built on WordPress with modern JavaScript frameworks such as React and uses SEO best practices including structured data and canonical URLs. Performance and mobile optimization are good, though accessibility is basic. Security posture is solid with HTTPS enforced and secure login forms, but lacks some security headers and explicit privacy/cookie policies. WHOIS data is missing, which slightly reduces trust but the professional site and branding mitigate concerns. Overall, the site is safe, business-focused, and well-implemented with room for improvement in privacy compliance and security headers.

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.de

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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
80
Network security
100
GDPR outside view
50
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's market positioning leverages the integration of Newsletter2go to strengthen its email marketing offerings in the German market. The business model is SaaS-based, targeting SMEs and enterprises needing newsletter and email campaign management. Revenue streams likely include subscription plans and user licenses. The partnership ecosystem includes Newsletter2go and related support domains, indicating a cohesive brand strategy. Growth indicators include active account creation and login portals. The company demonstrates consistent branding and professional content, supporting credibility and trust. However, the absence of detailed WHOIS data and limited contact information on the page suggest areas for transparency improvement.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and secure form inputs. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options is a gap that could expose the site to clickjacking or MIME sniffing attacks. No vulnerabilities or exposed sensitive data were detected in the HTML content. There is no visible incident response or vulnerability disclosure information, which is a compliance and security best practice gap. GDPR compliance indicators are weak due to missing explicit privacy and cookie policies. Overall, the security posture is adequate but could be enhanced by implementing recommended headers and transparency measures.

Recommendations

  1. Implement comprehensive privacy and cookie policies with explicit consent mechanisms to improve GDPR compliance.
  2. Add security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen defense-in-depth.
  3. Publish clear vulnerability disclosure and incident response information to build trust and comply with security best practices.
  4. Enhance accessibility features to improve usability for all users and meet accessibility standards.
  5. Increase transparency by providing more detailed company contact information and verifying WHOIS data availability.
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 targets German-speaking users and offers account creation and login for Brevo's newsletter platform.
Key services
Email marketing, Newsletter management, User login and account management
Content quality
good
Branding
consistent

Technology

Stack
WordPress 5.8.1, Yoast SEO Premium plugin, jQuery 3.6.0, React 16.13.1, Lodash 4.17.19
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 field

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 challenge
  2. Content is professional and business-focused on email marketing
  3. WHOIS data is missing, which is unusual for an active .com domain
  4. No explicit privacy or cookie policies found on this page
  5. Terms of Service links are present but hosted on a related domain
  6. Contact email support@newsletter2go.com is provided
  7. No phone numbers or physical addresses found on this page
  8. Uses modern web technologies and SEO best practices
  9. No security headers detected in provided data
  10. No vulnerability disclosure or security incident info found
Technical notes

Notes

The website is built on a WordPress CMS platform enhanced with React and modern JavaScript libraries such as Lodash and jQuery. SEO is well implemented using Yoast SEO Premium with structured JSON-LD data and canonical URLs. The site loads moderate performance assets hosted on marketing-assets.brevo.com and uses Cloudflare Insights for analytics. Mobile optimization is good, but accessibility is basic. There is no evidence of hosting provider details from the HTML content. The technical stack is modern and supports a professional user experience, though some technical debt is indicated by missing security headers and limited privacy compliance features.
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. 66/100Medium26 findingsView report
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