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Security report for glassdoor.co.uk

Glassdoor · Technology · United Kingdom

Low risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

77/100

Risk levelLow

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

Glassdoor is a prominent online job search and career community platform offering millions of job listings, company reviews, salary comparisons, and employer branding services. The website targets job seekers, professionals, and employers primarily in the United Kingdom and globally. The platform leverages modern web technologies including React and integrates multiple analytics and marketing tools to deliver a responsive and engaging user experience. Security posture is strong with HTTPS enforced and standard security headers, though explicit privacy and cookie policies are not evident in the provided content. The WHOIS data for the domain www.glassdoor.co.uk is unavailable due to domain naming rules error, likely because the query was made on a subdomain rather than the base domain, but the website content and branding strongly indicate legitimacy. Overall, the site demonstrates a mature digital presence with room for improvement in privacy compliance and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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. 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 glassdoor.co.uk

This scan found 18 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

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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

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
52
Security headers
55
Email security
85
DNS health
70
Network security
100
GDPR outside view
100
Average
77

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

Glassdoor operates as a large technology company in the online employment sector, providing a platform for job search, company reviews, and salary data. Its business model includes user-generated content and employer services such as branding and analytics. The company maintains a strong market position as a trusted source for workplace insights and job opportunities. The website's extensive global domain network supports localized content for multiple countries. The platform's integration with major analytics and marketing tools suggests a data-driven approach to user engagement and growth. No direct contact or corporate registration information is publicly visible, which is typical for large consumer-facing platforms.

Security posture

The website employs HTTPS with good SSL configuration and standard security headers such as Cache-Control and Pragma to prevent caching of sensitive data. JavaScript libraries are loaded asynchronously to optimize performance and reduce attack surface. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a security.txt file, incident response contact information, and explicit security policies indicates gaps in transparency and formal security communication. Privacy compliance is limited by the lack of visible privacy and cookie policies, which could pose regulatory risks. Overall, the security posture is solid but could benefit from enhanced compliance documentation and vulnerability disclosure mechanisms.

Recommendations

  1. Publish comprehensive privacy and cookie policies prominently on the website to improve GDPR compliance and user trust.
  2. Implement and publish a security.txt file to facilitate responsible vulnerability disclosure and improve security transparency.
  3. Enhance accessibility features to meet recognized standards and improve user experience for all visitors.
  4. Add explicit incident response and security contact information to demonstrate preparedness and accountability.
  5. Regularly audit third-party scripts and analytics tools to minimize privacy risks and ensure compliance with data protection regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Glassdoor
Description
Find your work people at the new home for workplace conversation. Search millions of jobs, salaries and company reviews and chat anonymously about worklife.
Key services
Job search, Company reviews, Salary comparisons, Employer branding solutions
Content quality
good
Branding
consistent

Technology

Stack
React 18.3.1, RudderStack, Amplitude, Google Tag Manager, Scorecard Research, DotLottie Player
Frameworks
React
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of async and defer for scripts

Analytics and tracking

Services
Amplitude, Scorecard Research, Google Tag Manager
Tracking level
extensive
Privacy practices
basic

Advertising

Ad networks
Scorecard Research
Tracking pixels
Amplitude
Marketing tools
RudderStack
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 rich content
  2. No WAF or blocking mechanisms detected
  3. WHOIS data unavailable due to domain naming rules error
  4. Strong branding and consistent professional design
  5. Extensive use of modern JavaScript frameworks and analytics
  6. No explicit privacy or cookie policy found in provided content
  7. No direct contact emails or phone numbers found in HTML snippet
  8. Social media links present in structured data
  9. No security.txt or vulnerability disclosure found
  10. No incident response or security policy information found
Technical notes

Notes

The website is built on a modern React framework with a well-structured front-end architecture. It uses advanced font loading strategies and preconnect hints to optimize performance. Integration with multiple analytics and marketing platforms such as Amplitude, RudderStack, and Google Tag Manager indicates a sophisticated data collection and user tracking infrastructure. The site is mobile-optimized with responsive design elements and preloaded fonts for faster rendering. However, the lack of a detected CMS suggests a custom or proprietary content management solution. Performance is moderate with room for improvement in accessibility and SEO optimization. The WHOIS lookup failure suggests a need to verify domain registration details and ensure proper domain management 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. 78/100Low25 findingsView report
  2. 78/100Low25 findingsView report
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