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Security report for mumsnet.com

Mumsnet · Media · United Kingdom

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

Mumsnet is a well-established UK-based online community platform focused on parenting advice and support. It holds a leading market position as the UK's most popular website for parents, offering forums, discussions, and resources that cover a wide range of parenting topics from conception to teenage years. The business model is primarily advertising-supported, leveraging a large active user base and extensive partnerships with ad networks and affiliate programs. The website demonstrates a high level of professionalism, with excellent content quality and consistent branding that appeals to its target audience of UK parents.

Scanned

NIS2 and GDPR posture

GDPR outside view
70/ 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
    • 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 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 mumsnet.com

This scan found 15 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

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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
60
Security headers
60
Email security
87
DNS health
85
Network security
100
GDPR outside view
70
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

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 mumsnet.com, from OffSeq Breach.

Total records
2,343
Employees
0
Customers
2,293
Third parties
50
Weak passwords
9%

8 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 mumsnet.com.

Select it in the checkout above.

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

Technical appendix

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

Business context

Business profile

Mumsnet's market positioning as a top parenting community in the UK provides it with competitive advantages including brand recognition, a loyal user base, and diversified revenue streams through advertising and affiliate marketing. The platform's integration with multiple ad networks and marketing tools indicates a mature digital marketing strategy. While direct company contact details are limited, the presence of comprehensive privacy and cookie policies and active social media channels supports a transparent and engaged business operation. No parent or subsidiary companies were identified, suggesting Mumsnet operates as an independent entity.

Security posture

The website employs strong security measures including HTTPS with excellent SSL configuration, multiple security headers, and a consent management platform for GDPR compliance. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of a dedicated security policy or incident response contact information represents a gap in transparency and preparedness. The security posture is strong overall but could be improved by publishing explicit security and vulnerability disclosure policies to enhance trust and readiness.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Enhance contact information availability by including verified company emails or phone numbers for support and business inquiries.
  5. Continue to monitor and update third-party scripts and advertising technologies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mumsnet
Description
Mumsnet makes parents’ lives easier by pooling knowledge, advice and support on everything from conception to childbirth, from babies to teenagers.
Key services
Parenting forums, Advice and support, Community discussions, Advertising platform
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Prebid.js, Google Tag Manager, Facebook Pixel, Amplitude Analytics, Permutive, Cloudflare (likely CDN), Livewire, Tailwind CSS, Alpine.js, Google One Tap
Frameworks
Vue.js, Livewire
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP
  • Secure cookies
  • Consent management platform (Sourcepoint)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Amplitude Analytics, Google Analytics (inferred), Permutive
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Ad Manager, PubMatic, Amazon Ads, BeOp, Blockthrough, GeoEdge, Ozone, Permutive, Prebid, Rubicon, SmartAdServer, Sovrn, TripleLift, Skimlinks, KueezRTB, OptiYield
Tracking pixels
Facebook Pixel, Amplitude Analytics, Sourcepoint CMP, OneTag
Marketing tools
Amplitude, Permutive
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 no blocking or WAF challenges.
  2. Strong focus on parenting community and advice.
  3. Extensive use of modern advertising and analytics technologies.
  4. Comprehensive privacy and cookie policies with consent mechanisms.
  5. No direct company contact emails or phone numbers found in HTML; contact via forms.
  6. No explicit security or incident response policies published.
  7. High quality and professional design and content.
  8. No adult or questionable content detected.
Technical notes

Notes

Mumsnet's technical infrastructure is modern and robust, utilizing a combination of JavaScript frameworks (Vue.js, Livewire), CSS frameworks (Tailwind CSS), and a comprehensive adtech stack including Prebid.js, Google Ad Manager, and multiple DSPs. The site is optimized for mobile devices with responsive design and accessibility features. Hosting appears to leverage Cloudflare CDN for performance and security benefits. The website loads efficiently with proper SEO meta tags and structured data enhancing search engine visibility. Opportunities exist to document CMS usage and further optimize accessibility compliance.
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

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