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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

78/100

Risk levelLow

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

Glassdoor operates as a leading 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, as indicated by the domain and localized content. The business model revolves around providing transparent workplace insights and facilitating connections between candidates and employers. The platform holds a strong market position as a trusted resource for workplace information and job search.

Scanned

This is an earlier scan of glassdoor.co.uk. View the latest report

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 17 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.

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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
57
Security headers
55
Email security
85
DNS health
70
Network security
100
GDPR outside view
100
Average
78

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's business intelligence reveals a well-established brand with a consistent and professional online presence. The company leverages social media channels effectively and maintains a comprehensive service offering that addresses multiple facets of the employment lifecycle. The absence of direct contact information in the analyzed content suggests a focus on user account-based interactions. The domain WHOIS data for the exact subdomain queried is unavailable, but the main domain is presumed legitimate. The company operates at a large scale within the technology sector, serving a broad audience across multiple countries.

Security posture

The site enforces HTTPS and uses privacy-conscious monitoring tools with user input masking. No critical vulnerabilities or exposed sensitive data were detected in the provided content. However, the absence of visible security headers and formal security policies indicates room for improvement in security maturity. The lack of vulnerability disclosure and incident response information may limit transparency and preparedness. Overall, the security posture is solid but could benefit from enhanced documentation and technical controls.

Recommendations

  1. Publish clear and accessible privacy and cookie policies with GDPR compliance details.
  2. Implement and verify security headers such as Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options.
  3. Establish and publicize a vulnerability disclosure policy and security.txt file to improve transparency.
  4. Add visible and verified company contact information including support emails and phone numbers to enhance trust.
  5. Conduct periodic security audits and update third-party libraries to mitigate potential vulnerabilities.
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
Content quality
excellent
Branding
consistent

Technology

Stack
React, jQuery, DotLottie player, Datadog RUM
Frameworks
React
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Datadog RUM with privacy masking

Analytics and tracking

Services
Datadog RUM, ScorecardResearch
Tracking level
minimal
Privacy practices
basic

Advertising

Ad networks
ScorecardResearch
Tracking pixels
Datadog RUM
Transparency
basic

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
  2. No WAF or blocking detected
  3. WHOIS data for the exact domain queried is invalid due to subdomain query
  4. Strong use of modern web technologies
  5. No explicit or adult content detected
  6. No visible contact emails or phone numbers in provided HTML snippet
  7. No privacy or cookie policy links detected in provided content
  8. Good SEO and accessibility practices observed
Technical notes

Notes

The infrastructure is built on a modern React framework with deferred loading of scripts and fonts for performance optimization. Integration with Datadog RUM indicates active monitoring of user experience and performance metrics. The site uses multiple external resources including Google Fonts, Facebook SDK, and CDN-hosted libraries. While performance is moderate, further optimization could be achieved by consolidating external calls and enhancing caching strategies. Accessibility features such as skip links and ARIA labels are present, supporting inclusive design.
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. 77/100 −1Low26 findingsView report
  2. 78/100Low25 findingsView report
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