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Security report for litmus.com

Litmus · Technology · United States

Low risk. 2 critical or high findings in GDPR outside view.

Security score

86/100

Risk levelLow

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

Litmus Software, Inc. is a well-established technology company founded in 2005, specializing in providing an all-in-one email marketing platform. The company serves a broad audience of marketers and businesses seeking to optimize their email campaigns through tools for building, testing, personalizing, and analyzing emails. With a strong market presence and over 800,000 marketers relying on its services, Litmus holds a competitive position supported by industry awards and positive customer reviews. Technically, the website is built on WordPress and integrates modern marketing and analytics technologies, including Segment, Marketo, and Visual Website Optimizer, demonstrating a mature digital infrastructure. However, the website's SSL certificate is currently invalid or missing, which critically impacts its security posture. Despite this, Litmus maintains good privacy compliance with a comprehensive privacy policy, cookie consent mechanisms, and GDPR adherence. The company also displays certifications such as CCPA, GDPR, and AICPA SOC, reinforcing trust and compliance. Overall, Litmus presents a professional, content-rich, and user-friendly website but requires urgent remediation of its SSL and TLS configurations to ensure secure communications and maintain trust.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
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

2 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • 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

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

Keep watching litmus.com

This scan found 10 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.

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
100
Security headers
95
Email security
85
DNS health
90
Network security
100
GDPR outside view
43
Average
86

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

Litmus operates a SaaS subscription-based business model focused on email marketing technology. Its key services include email testing, building, personalization, analytics, monitoring, and collaboration tools, integrated with popular ESPs and marketing platforms. The company targets marketing professionals and teams across industries, emphasizing ease of use and ROI maximization. Litmus has a medium-sized workforce and offices in the USA and UK, indicating a global footprint. The website content and structure reflect a strong brand identity and consistent messaging. The company leverages a broad ecosystem of marketing and analytics tools, indicating a sophisticated approach to customer engagement and data-driven marketing. No direct parent or subsidiary relationships were identified. The absence of a public vulnerability disclosure or incident response page suggests an area for potential improvement in transparency.

Security posture

The website demonstrates partial security maturity with correctly configured SPF and DMARC DNS records, and no subdomain takeover vulnerabilities. However, the invalid SSL certificate and lack of enabled TLS protocols represent critical security weaknesses that expose users to potential risks. The absence of HSTS and OCSP stapling further reduces the security robustness. The malformed CAA DNS records indicate DNS configuration issues that could affect certificate issuance and trust. No explicit incident response or security contact information was found, which may hinder timely vulnerability reporting and response. Overall, while privacy compliance and some security best practices are in place, the critical SSL/TLS issues significantly degrade the security posture and require immediate attention.

Recommendations

  1. Immediately renew or correctly install a valid SSL certificate to enable HTTPS and secure communications.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) and disable deprecated versions to enhance encryption strength.
  3. Implement HTTP Strict Transport Security (HSTS) with includeSubDomains and preload directives to enforce HTTPS usage.
  4. Correct the malformed CAA DNS records to valid entries to control certificate authorities authorized to issue certificates.
  5. Establish and publish a vulnerability disclosure policy and incident response contact channels to improve security transparency and responsiveness.

Contact details published on the site

Addresses
Legal name
Litmus Software, Inc.
Technical notes

Notes

The website is hosted on Amazon AWS infrastructure with DNS managed by AWS Route 53. It uses WordPress CMS with Yoast SEO for optimization and integrates multiple third-party marketing and analytics tools such as Segment, Marketo, Heap, and Visual Website Optimizer. The site employs lazy loading and modern JavaScript libraries including jQuery and Lottie for animations. Performance is moderate with a page load time of approximately 6 seconds and a page size of about 810 KB. Mobile optimization and accessibility are rated good, supported by responsive design and accessibility-conscious content. Technical debt is indicated by the invalid SSL certificate and missing modern TLS support, which pose operational risks. Opportunities exist to improve performance and security configurations to align with best practices.
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. 90/100 +1Low17 findingsView report
  2. 89/100Low18 findingsView report
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