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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 has recently joined HubSpot, enhancing its market position as a leading provider of enriched data and marketing intelligence services. The company focuses on enabling marketing and revenue teams to enrich records, score leads, route prospects, and reveal buying intent using a combination of public data, proprietary sources, and AI technologies. The website reflects a mature business with clear branding, professional content, and a strong integration with HubSpot's ecosystem. Technically, the website is built on modern frameworks such as Next.js and React, hosted on AWS infrastructure, and employs multiple analytics and marketing tools including Segment, Google Analytics, Facebook Pixel, and HubSpot scripts. The site is fast, mobile-optimized, and SEO-friendly, demonstrating a high level of digital maturity. From a security perspective, the domain is secured with HTTPS and domain locking mechanisms, though DNSSEC is not enabled. The site includes comprehensive privacy and cookie policies with consent mechanisms, but lacks explicit incident response contacts and vulnerability disclosure policies. No critical vulnerabilities or exposed sensitive data were detected. Overall, Clearbit's website presents a low-risk profile with strong business credibility and technical implementation. Strategic recommendations include enabling DNSSEC, publishing a security.txt file, and providing clearer incident response contact information to further enhance trust and security posture.

Scanned

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

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 13 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

Email alerts on material changes and an exportable JSON history of every change.

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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 operates in the technology sector as a SaaS data provider specializing in B2B marketing intelligence. Its acquisition by HubSpot positions it strongly within the CRM and marketing automation ecosystem. The business model revolves around data enrichment, lead scoring, intent data, and form optimization services targeted at B2B marketing and sales teams. The company leverages proprietary and public data combined with AI to deliver precise and actionable insights. The website content and structure indicate a medium-sized enterprise with a consistent brand and a focus on trust and compliance. The partnership with HubSpot and presence of a status page reflect operational maturity and customer support focus.

Security posture

Clearbit demonstrates a mature security posture with HTTPS enforced and domain registration protections in place. The absence of DNSSEC is a minor gap. The website includes privacy and cookie policies aligned with GDPR compliance, but lacks explicit incident response and vulnerability disclosure information, which are important for transparency and rapid response to security events. Multiple third-party tracking and marketing scripts are used, indicating extensive user data collection, which is managed with consent mechanisms. No critical security issues or vulnerabilities were identified in the analysis. Overall, the security posture is strong but could be improved with additional transparency and DNS security enhancements.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS integrity and prevent spoofing.
  2. Publish a security.txt file or vulnerability disclosure policy to facilitate responsible reporting of security issues.
  3. Add explicit incident response contact information (e.g., security@ or abuse@ email) on the website.
  4. Regularly review and audit third-party scripts to minimize privacy risks and ensure compliance.
  5. Consider obtaining and publishing recognized security certifications to enhance customer trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Clearbit
Description
Clearbit is a Data Activation Platform that enables B2B marketing and revenue teams to enrich and combine their data with first-party intent to create precise, real-time audiences. It offers global data enrichment, lead scoring and routing, buying intent revelation, and form shortening to improve lead conversion.
Key services
Data enrichment for leads, contacts, and accounts, Lead scoring and routing, Reveal buying intent from anonymous website visitors, Form shortening to improve conversion
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Segment Analytics, Google Analytics, Facebook Pixel, LinkedIn Insight Tag, Twitter Ads, Customer.io, HubSpot Scripts, AWS DNS
Frameworks
Next.js, React
Platforms
HubSpot
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Google Analytics, Segment Analytics, HubSpot Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel, LinkedIn Insight Tag, Twitter Ads
Marketing tools
Segment Analytics, Customer.io, HubSpot
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website clearly states Clearbit has joined HubSpot, indicating corporate acquisition.
  2. Strong focus on B2B data enrichment and marketing intelligence.
  3. Multiple tracking and analytics scripts used for marketing and user behavior analysis.
  4. No direct contact emails or phone numbers found on homepage; contact likely via HubSpot platform.
  5. Good legal and privacy documentation present.
  6. No security.txt or vulnerability disclosure policy found.
  7. No explicit incident response or security contact information found.
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, providing server-side rendering and fast performance. Hosting is on AWS infrastructure, supported by AWS DNS services. The site uses multiple marketing and analytics tools such as Segment, Google Analytics, Facebook Pixel, LinkedIn Insight Tag, Twitter Ads, and Customer.io, indicating a sophisticated marketing stack. The site is mobile-optimized and accessible with good SEO practices. No deprecated or vulnerable libraries were detected. The technical implementation supports a high-quality user experience and robust data collection capabilities, though the complexity of third-party integrations requires ongoing security and privacy management.
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 +2Low20 findingsView report
  2. 81/100 −2Low22 findingsView report
  3. 83/100Low18 findingsView report
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