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Security report for clearbit.com

Clearbit · Technology · N/a

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

Security score

83/100

Risk levelLow

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

Clearbit is a well-established B2B data activation platform that specializes in enriching and combining data for marketing and revenue teams. Recently acquired by HubSpot, Clearbit integrates deeply with HubSpot's CRM and marketing platform to provide real-time lead enrichment, scoring, routing, and intent data. The website reflects a mature business with a clear focus on B2B SaaS customers, offering advanced data services to improve sales and marketing effectiveness. Technically, the site is built on modern frameworks such as Next.js and leverages multiple analytics and marketing tools, indicating a high level of digital maturity. Security posture is strong with HTTPS enforced and no visible vulnerabilities, though DNSSEC is not enabled and no explicit vulnerability disclosure policy is found. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms. Overall, the site and domain registration data support a trustworthy and professional business presence.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 clearbit.com

This scan found 12 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
77
Security headers
65
Email security
100
DNS health
90
Network security
100
GDPR outside view
68
Average
83

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

Clearbit holds a strong market position as a leading B2B data provider, now under the HubSpot umbrella, which enhances its credibility and reach. Its business model is SaaS-based, targeting B2B marketing and sales teams who require enriched data for lead qualification and intent detection. The company benefits from strategic partnerships and integrations, especially with HubSpot, and uses a comprehensive technology stack to deliver its services. The website content and structure indicate a focus on quality data, global coverage, and ease of use through features like dynamic form shortening. The absence of direct contact information on the homepage suggests a focus on digital engagement and self-service. The company is likely medium-sized with a history dating back to 2003, indicating stability and experience in the market.

Security posture

The website demonstrates a solid security posture with HTTPS enforced and no exposed sensitive information. The use of reputable third-party analytics and marketing scripts is balanced with a visible cookie consent mechanism, supporting privacy compliance. However, the lack of DNSSEC and absence of a published vulnerability disclosure or incident response contact are areas for improvement. No critical vulnerabilities or security headers were detected in the HTML content, and the domain registration details align with a legitimate enterprise. Overall, the security maturity is good but could be enhanced by adopting additional DNS security measures and publishing formal security policies.

Recommendations

  1. Enable DNSSEC to improve DNS security and prevent spoofing.
  2. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  3. Add explicit incident response contact information on the website.
  4. Consider displaying security certifications or compliance badges to enhance trust.
  5. Regularly review third-party scripts for vulnerabilities and update them promptly.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Clearbit
Description
Clearbit is a Data Activation Platform that lets B2B marketing and revenue teams enrich and combine their data with first-party intent to create precise, real-time audiences. It offers data enrichment, lead scoring, routing, and buying intent revelation.
Key services
Data enrichment, Lead scoring and routing, Buying intent revelation, Form shortening and lead conversion
Content quality
excellent
Branding
consistent

Technology

Stack
React (Next.js), Segment analytics, Google Analytics, Google Tag Manager, Facebook Pixel, LinkedIn Insight Tag, Customer.io, Mutiny personalization, AWS DNS
Frameworks
Next.js
Platforms
HubSpot Native Data Provider
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner
  • No exposed sensitive data in HTML
  • Use of reputable analytics and marketing scripts

Analytics and tracking

Services
Google Analytics, Segment, Customer.io, LinkedIn Insight Tag, Facebook Pixel
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel, LinkedIn Insight Tag
Marketing tools
Segment, Customer.io, Mutiny personalization
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. Clear and professional branding consistent with a B2B SaaS data provider.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No direct contact emails or phone numbers found on the homepage HTML.
  5. Use of multiple reputable analytics and marketing tools.
  6. No visible security vulnerabilities or exposed sensitive data.
  7. Domain WHOIS data supports legitimacy and long-term operation.
  8. No evidence of suspicious or malicious external domains.
Technical notes

Notes

The website is built using modern web technologies including Next.js (React framework), and integrates multiple analytics and marketing tools such as Segment, Google Analytics, Facebook Pixel, and LinkedIn Insight Tag. Hosting appears to be on AWS infrastructure, supported by AWS DNS servers. The site is optimized for performance and mobile responsiveness, with good SEO and accessibility practices observed. The use of a cookie consent banner and privacy policy indicates attention to regulatory compliance. No CMS was explicitly detected, suggesting a custom or headless CMS approach. Overall, the technical implementation is robust, modern, and aligned with industry 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. 83/100 +2Low21 findingsView report
  2. 81/100 −2Low22 findingsView report
  3. 83/100Low18 findingsView report
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