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Security report for mailchimp.com

Mailchimp · Technology · United States

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

81/100

Risk levelLow

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

Mailchimp is a leading marketing, automation, and email platform that leverages AI and real-time behavioral data to help businesses convert customers effectively. As a subsidiary of Intuit Inc., it holds a strong market position with a comprehensive suite of services including email marketing, website building, social media marketing, and audience management. The platform targets small to enterprise-level businesses, startups, agencies, and developers, offering a SaaS subscription model with free trials to attract users. Technically, Mailchimp employs a modern and robust technology stack including JavaScript frameworks, Google Tag Manager, Segment, Optimizely, and FullStory for analytics and user experience optimization. The site is hosted on Akamai's infrastructure, ensuring fast performance and excellent mobile optimization. SEO and accessibility practices are well implemented, contributing to a professional and user-friendly website. From a security perspective, Mailchimp enforces HTTPS, uses domain status locks to prevent unauthorized changes, and integrates CAPTCHA and consent management tools to protect user data and comply with privacy regulations. However, explicit security policies and incident response information are not publicly detailed, and DNSSEC is not enabled, which could be improved. No vulnerabilities or suspicious activities were detected. Overall, Mailchimp presents a secure, compliant, and highly credible online presence with strong business credibility and technical maturity. The domain WHOIS data aligns with the company's history and legitimacy, reinforcing trust. Strategic recommendations include enabling DNSSEC, publishing detailed security policies, and adding a vulnerability disclosure mechanism to further enhance security posture.

Scanned

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

3 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 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 Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching mailchimp.com

This scan found 14 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

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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
79
Security headers
45
Email security
87
DNS health
90
Network security
100
GDPR outside view
85
Average
81

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 mailchimp.com, from OffSeq Breach.

Total records
842,947
Employees
59
Customers
842,743
Third parties
145
Weak passwords
8%

Latest record dated 2026-06-18 · 617 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 mailchimp.com.

Select it in the checkout above.

Masked preview

  • –login.mailchimp.com2026-06-18
  • –login.mailchimp.com2026-06-17
  • –login.mailchimp.com2026-05-28
  • –login.mailchimp.com2026-05-28
  • –login.mailchimp.com2026-05-25

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

Mailchimp operates as a SaaS provider in the marketing technology sector, focusing on email marketing and automation. Its competitive advantage lies in AI-driven marketing tools and a broad integration ecosystem with platforms like Shopify, WooCommerce, and Salesforce. Revenue streams are primarily subscription-based with tiered pricing and free trials to encourage adoption. The company targets diverse customer segments including e-commerce, startups, agencies, and developers. Its parent company, Intuit, provides additional market strength and resources. Mailchimp's partnership ecosystem includes major e-commerce and CRM platforms, enhancing its market reach and service offerings. Growth indicators include continuous feature expansion, AI integration, and strong brand consistency.

Security posture

Mailchimp demonstrates a mature security posture with enforced HTTPS, domain registration protections, and use of CAPTCHA to mitigate automated abuse. Privacy compliance is strong with comprehensive privacy and cookie policies and consent mechanisms. However, the absence of a publicly available security policy, incident response contacts, and vulnerability disclosure program indicates areas for improvement. DNSSEC is not enabled, which is a recommended best practice for DNS security. The use of multiple third-party analytics and marketing scripts necessitates ongoing security audits to prevent vulnerabilities. Overall, Mailchimp maintains a secure environment appropriate for its business scale but should enhance transparency and DNS security.

Recommendations

  1. Enable DNSSEC to improve DNS security and prevent spoofing.
  2. Publish a detailed security policy and incident response plan on the website.
  3. Implement and publicize a vulnerability disclosure program and security.txt file.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Enhance HTTP security headers such as Content Security Policy and X-Content-Type-Options.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mailchimp
Description
Mailchimp offers a marketing, automation, and email marketing platform that uses real-time behavior data and AI to help businesses convert more customers. It provides easy-to-use tools with a free start option.
Key services
Email marketing, Marketing automation, Website builder, Social media marketing, Audience management, Analytics and reporting, AI marketing tools, Lead generation
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, React (likely), Google Tag Manager, Google Analytics, Segment Analytics, Optimizely, FullStory, Bugsnag, AppFabric, OneTrust Cookie Consent, Qualtrics, BrightEdge
Frameworks
AppFabric, Optimizely
Platforms
Google Analytics, Segment, FullStory
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Domain status locks (clientDeleteProhibited, clientTransferProhibited, etc.)
  • Use of CAPTCHA (Google reCAPTCHA)
  • Consent management via OneTrust
  • Error monitoring with Bugsnag

Analytics and tracking

Services
Google Analytics, Segment, FullStory, Optimizely
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
Segment, FullStory, Optimizely
Marketing tools
Segment Analytics, Optimizely, FullStory, Qualtrics
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 integration with multiple analytics and marketing tools.
  3. No signs of blocking or WAF challenges.
  4. Comprehensive privacy and cookie policies present with consent mechanisms.
  5. Domain WHOIS data supports legitimacy and long-term operation.
  6. No explicit security policy or incident response page found publicly.
  7. No vulnerability disclosure or security.txt detected.
  8. Contact information includes a clearly labeled sales phone number and contact forms.
  9. Website targets business users in marketing and e-commerce sectors.
  10. Parent company Intuit is clearly referenced in branding and linked domains.
Technical notes

Notes

The website is built on a modern JavaScript-based stack with integrations of advanced analytics and user experience tools like Google Analytics, Segment, Optimizely, and FullStory. Hosting on Akamai ensures high availability and performance. The site is well optimized for mobile devices and accessibility, with proper SEO metadata and structured data (JSON-LD) for enhanced search engine understanding. The use of OneTrust for cookie consent and Google reCAPTCHA for bot mitigation reflects good compliance and security practices. The technical infrastructure supports scalability and robust marketing capabilities, though there is room for improvement in DNS security and explicit security documentation.
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. 82/100Low20 findingsView report
  2. 82/100 +10Low20 findingsView report
  3. 72/100Medium22 findingsView report
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