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Security report for fullstory.com

FullStory · Technology · United States

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

72/100

Risk levelMedium

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

FullStory is a leading behavioral data platform that surfaces user sentiment buried between clicks to help businesses create better products and win loyal customers. Positioned as an enterprise SaaS provider in the technology sector, FullStory targets product teams, UX designers, and digital marketers seeking deep insights into customer behavior and experience. The website reflects a mature digital presence with professional branding, comprehensive content, and clear calls to action for demos and contact. Technically, the site is built using modern frameworks such as Gatsby and React, ensuring fast performance, mobile responsiveness, and good SEO practices. The presence of security headers and HTTPS indicates a strong baseline security posture, although explicit security policies and incident response contacts are not publicly detailed. Privacy and cookie policies are comprehensive and GDPR compliant, reflecting attention to regulatory requirements. Security-wise, the site demonstrates good practices with secure forms and no visible vulnerabilities. However, the absence of WHOIS data and domain registration details introduces some uncertainty regarding domain legitimacy. Overall, the risk is mitigated by the professional and consistent business presentation, but domain registration transparency should be improved. Strategic recommendations include publishing a dedicated security policy, providing incident response contacts, and establishing a vulnerability disclosure program to enhance trust. Regular audits of third-party scripts and continued focus on accessibility will further strengthen the platform's security and compliance posture.

Scanned

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

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

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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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

This scan found 21 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

€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
52
Security headers
30
Email security
80
DNS health
85
Network security
100
GDPR outside view
85
Average
72

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 operates in the competitive behavioral analytics market, leveraging a SaaS model to deliver user sentiment and product analytics solutions. Its competitive advantage lies in surfacing nuanced behavioral data that traditional analytics may miss, enabling product teams to optimize user experience effectively. The company likely generates revenue through subscription tiers targeting medium to large enterprises. The website's content and testimonials suggest a strong partnership ecosystem and a focus on customer success. Growth indicators include active marketing tools and engagement channels, though no explicit financial or founding year data is disclosed. The company maintains a consistent brand voice and targets a professional audience in the technology sector.

Security posture

The website exhibits a mature security posture with HTTPS enforcement and multiple security headers such as Content-Security-Policy and Strict-Transport-Security. Forms are secured with validation, and no sensitive data leakage is apparent. However, the lack of a public security policy or incident response information limits transparency. There is no evidence of a vulnerability disclosure program or security.txt file, which are best practices for enterprise security communication. Compliance with GDPR is indicated by privacy and cookie policies, but explicit NIST or ISO 27001 framework references are absent. Overall, the security maturity is good but could be enhanced by formalizing security governance and incident response disclosures.

Recommendations

  1. Publish a dedicated security policy page detailing security controls and governance.
  2. Provide clear incident response contact information, including security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Conduct regular third-party script audits to mitigate supply chain risks.
  5. Enhance accessibility features to meet or exceed WCAG standards.

Contact details published on the site

Addresses
Legal name
FullStory, Inc.
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, Product analytics, Customer experience insights
Content quality
excellent
Branding
consistent

Technology

Stack
React, Gatsby, JavaScript, CSS
Frameworks
Gatsby
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data detected
  • Secure forms with validation

Analytics and tracking

Services
FullStory Analytics, Marketo
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
FullStory tracking pixel
Marketing tools
Marketo
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 rich content and professional design
  2. No WHOIS data available, indicating possible privacy protection or registry anomaly
  3. Comprehensive privacy and cookie policies present
  4. No explicit security policy or incident response information found
  5. No vulnerability disclosure or security.txt detected
  6. Multiple forms present for contact and demo requests
  7. Use of modern web technologies and frameworks
  8. Strong branding and consistent messaging
  9. No suspicious or malicious content detected
Technical notes

Notes

The website is built on a modern technology stack featuring React and Gatsby, enabling fast loading times and excellent mobile optimization. The use of CSS modules and animation enhances user experience without compromising performance. SEO is well addressed with comprehensive meta tags and Open Graph data. Hosting details are not explicitly found but likely use a CDN or cloud provider given performance indicators. No major technical debt or deprecated libraries are detected. Opportunities exist to improve technical documentation and integrate advanced accessibility tools to broaden user inclusivity.
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. 75/100Medium28 findingsView report
  2. 75/100 +2Medium28 findingsView report
  3. 73/100Medium25 findingsView report
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