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Security report for nextdoor.com

Nextdoor · Technology · United States

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

88/100

Risk levelLow

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

Nextdoor is a well-established technology company founded in 2004, operating a leading neighborhood social networking platform that facilitates trusted local connections, information exchange, and commerce within communities. The website demonstrates a professional and consistent brand presence with good content relevance and user experience tailored to neighborhood residents. Technically, the site leverages modern JavaScript frameworks, cloud hosting via AWS, and integrates multiple marketing and analytics tools such as Google Tag Manager, Facebook Pixel, and Branch.io, indicating a mature digital infrastructure. Security posture is generally good with HTTPS enforced and domain registration protections in place, though DNSSEC is not enabled and explicit security policies or incident response contacts are not found in the provided content. Privacy compliance is limited in visible content, with no explicit privacy or cookie policies detected, which may impact regulatory adherence. Overall, the site is safe, trustworthy, and professionally maintained, serving a general audience without adult or explicit content.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
73/ 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

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 Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  2. 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 nextdoor.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
82
Security headers
85
Email security
100
DNS health
85
Network security
100
GDPR outside view
73
Average
88

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

Nextdoor occupies a strong market position as a neighborhood-focused social networking platform, targeting local communities and residents. Its business model centers on community engagement, local commerce, and information sharing. The company likely generates revenue through advertising and partnerships, supported by extensive use of tracking and marketing technologies. The platform's global reach is evidenced by multiple localized domains. The absence of direct contact information or detailed business disclosures in the HTML suggests these may be located on other pages. The company benefits from a consistent brand and trust signals such as social media presence and domain longevity. Strategic partnerships or subsidiaries are not explicitly identified in the content provided.

Security posture

The website enforces HTTPS and employs domain registration safeguards such as clientDeleteProhibited status, enhancing domain security. However, DNSSEC is not enabled, representing a missed opportunity for DNS-level protection. No explicit security headers were detected in the provided data, which could improve protection against common web attacks. The absence of published security policies, incident response contacts, or vulnerability disclosure mechanisms limits transparency and preparedness visibility. Tracking scripts and marketing pixels are present, indicating moderate user tracking. No vulnerabilities or exposed sensitive data were identified in the content. Overall, the security posture is solid but could be enhanced with additional security headers, DNSSEC, and published security documentation.

Recommendations

  1. Enable DNSSEC to strengthen DNS security and prevent spoofing attacks.
  2. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  3. Implement and publish a security policy and incident response contact information to improve transparency and readiness.
  4. Add standard security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to mitigate common web vulnerabilities.
  5. Review and optimize tracking and marketing scripts to balance analytics needs with user privacy and compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Nextdoor
Description
Nextdoor is the neighborhood hub for trusted connections and the exchange of helpful information, goods, and services.
Key services
Local tips sharing, Buying and selling items, Community connections
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Facebook Pixel, Branch.io, AWS Cloudfront CDN, Google Sign-In
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
Google Analytics (implied via Google Tag Manager)
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Facebook Pixel, Bing Ads, Google Ads, Branch.io
Marketing tools
Facebook Pixel, Branch.io
Transparency
good

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. No explicit privacy, cookie, or terms of service pages detected in the provided HTML content
  3. Strong use of modern web technologies and tracking/marketing tools
  4. No direct contact information or security policy details found in the HTML content
  5. Good branding consistency and professional design
  6. No suspicious or malicious indicators detected
Technical notes

Notes

The website is hosted on AWS Cloudfront CDN, ensuring fast content delivery and scalability. It uses modern JavaScript libraries and frameworks, Google Tag Manager for analytics management, and integrates Facebook Pixel and Branch.io for marketing and attribution. The site is mobile optimized with responsive design and uses custom fonts loaded efficiently. SEO is supported by proper meta tags including Open Graph and Twitter cards. Accessibility is basic but present. No CMS is explicitly detected, suggesting a custom or proprietary platform. Performance is fast due to CDN usage and script preloading. Technical debt appears low, but improvements in security headers and DNSSEC could enhance robustness.
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. 88/100Low18 findingsView report
  2. 88/100 +3Low18 findingsView report
  3. 85/100Low20 findingsView report
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