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Security report for fullstory.com

Fullstory · Technology · N/a

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

75/100

Risk levelMedium

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

Fullstory operates as an enterprise SaaS company specializing in behavioral data platforms that analyze user sentiment to improve digital products. The website presents a professional and modern interface built on Gatsby and React, indicating a mature technical infrastructure. However, the absence of publicly available WHOIS data suggests domain privacy protection, which is common for technology companies but reduces transparency. Security posture is moderate due to lack of visible security headers, policies, or incident response information. Privacy compliance is weak as no privacy or cookie policies were detected. Overall, the site is trustworthy and well-branded but would benefit from enhanced transparency and security disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
85/ 100 · Low
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

4 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 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 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
    • 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 fullstory.com

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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
52
Security headers
45
Email security
80
DNS health
85
Network security
100
GDPR outside view
85
Average
75

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

Fullstory targets product teams and digital experience professionals with a SaaS platform that surfaces user behavioral insights. Their market position is strong within the technology sector, focusing on analytics and user sentiment. The business model revolves around subscription-based software services. The website content and branding reflect an enterprise-level organization with consistent messaging and professional design. No direct contact or regulatory information was found, which is typical for SaaS providers relying on digital engagement. The company likely operates globally but no specific country or founding year was identified.

Security posture

The website lacks explicit security headers and published security policies, which are important for protecting users and demonstrating security maturity. No vulnerability disclosure or incident response contacts were found, limiting the ability to report security issues. The absence of privacy and cookie policies raises compliance concerns, especially under GDPR. The domain WHOIS is privacy protected, which is acceptable but reduces transparency. Overall, the security posture is moderate with room for improvement in policy publication, header implementation, and incident response readiness.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Provide a publicly accessible security policy and incident response contact information.
  4. Add a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  5. Enhance transparency by providing WHOIS registrant information or company registration details where possible.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Fullstory
Description
Discover a behavioral data platform that surfaces user sentiment buried between clicks to create better products that win loyal customers for life.
Key services
Behavioral data platform, User sentiment analysis, Digital experience analytics
Content quality
excellent
Branding
consistent

Technology

Stack
Gatsby 5.15.0, React, JavaScript, CSS, Google Site Verification
Frameworks
Gatsby
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design
  2. No WHOIS data available publicly, indicating privacy protection or registry restrictions
  3. No explicit privacy, cookie, or terms of service pages detected in provided HTML
  4. No contact emails or phone numbers explicitly found in the HTML content
  5. No security policy or incident response information found
  6. No vulnerability disclosure or security.txt file detected
  7. Website uses modern web technologies and frameworks
  8. No signs of adult or questionable content
  9. No WAF or blocking detected
Technical notes

Notes

The website uses a modern static site generator (Gatsby) with React, indicating a performant and scalable architecture. Meta tags and Open Graph data are well implemented for SEO and social sharing. The site is mobile optimized and accessible with good navigation clarity. However, no CMS or hosting provider details were detected. Performance is likely fast due to static generation and CDN usage. Technical risks include lack of security headers and missing compliance documentation, which could impact user trust and regulatory adherence.
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. 75/100 +3Medium28 findingsView report
  2. 72/100 −1Medium29 findingsView report
  3. 73/100Medium25 findingsView report
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