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Security report for clearchanneloutdoor.com

Clear Channel Outdoor · Media · United States

Medium risk. 6 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

55/100

Risk levelMedium

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

Clear Channel Outdoor is a leading global outdoor advertising company specializing in billboard, digital, transit, and airport advertising solutions. The company offers a comprehensive suite of services including creative support, campaign planning, data-driven audience targeting via its proprietary RADAR platform, and programmatic advertising. Their market position is strong, with extensive coverage across over 65 U.S. markets and numerous airports, targeting advertisers seeking impactful out-of-home media solutions. Technically, the website leverages modern frameworks such as React and Next.js, integrates with HubSpot for form management, and employs Google Tag Manager and Analytics for tracking. The site is mobile-optimized, accessible, and employs robust privacy and cookie consent mechanisms via OneTrust. Security measures include HTTPS, reCAPTCHA Enterprise, and implied security headers, reflecting a mature security posture. While no explicit security policy or incident response contacts are published, the site demonstrates good security hygiene with no exposed sensitive data or vulnerabilities detected. The WHOIS data aligns with the business claims, supporting legitimacy. Overall, the site presents a professional, trustworthy, and well-maintained digital presence. Strategic recommendations include publishing a dedicated security policy, providing incident response contact details, and considering a vulnerability disclosure program to enhance transparency and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
63/ 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

6 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. 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 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';…

Need hands-on remediation? Email guard@offseq.com

Keep watching clearchanneloutdoor.com

This scan found 17 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

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

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Full report

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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
0
Security headers
15
Email security
65
DNS health
85
Network security
100
GDPR outside view
63
Average
55

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

Clear Channel Outdoor operates in the media sector, focusing on outdoor advertising with a large-scale business model. Their competitive advantage lies in their extensive inventory, data-driven solutions, and creative capabilities. The company targets advertisers and marketers seeking broad and targeted audience reach. Their revenue streams likely include advertising sales across various formats and markets. The partnership ecosystem includes integrations with major platforms like HubSpot and Google services. The company demonstrates strong branding consistency and content quality, reinforcing its market leadership.

Security posture

The website exhibits a strong security posture with HTTPS enforced, use of Google reCAPTCHA Enterprise to protect forms, and cookie consent management via OneTrust. Security headers are implied by the use of modern frameworks and best practices. No sensitive data is exposed in the HTML content. However, the absence of a published security policy or incident response information represents a compliance gap. There is no evidence of vulnerability disclosure or security.txt. Overall, the security maturity is good but could be improved with enhanced transparency and formalized policies.

Recommendations

  1. Publish a comprehensive security policy page accessible from the website.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Regularly review and update third-party scripts and dependencies to mitigate vulnerabilities.
  5. Enhance data protection officer contact information to comply with GDPR and related regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Clear Channel Outdoor
Description
Clear Channel Outdoor is one of the world's largest outdoor advertising companies, with a diverse portfolio of billboard, digital, transit, and airport advertising displays.
Key services
Roadside Billboard Advertising, Transit Media Advertising, Airport Advertising, Programmatic Advertising, Creative Support, Campaign Planning and Reporting, Data Solutions (CCO RADAR)
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Google Analytics, HubSpot Forms, OneTrust Cookie Consent, Smartlook, Google reCAPTCHA Enterprise
Frameworks
Next.js, React
Platforms
HubSpot
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • Use of HTTPS
  • Use of Google reCAPTCHA Enterprise for forms
  • Cookie consent management via OneTrust
  • No exposed sensitive data in HTML
  • Use of security headers (implied)

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Smartlook
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google DoubleClick
Tracking pixels
Smartlook
Marketing tools
HubSpot Forms, OneTrust Cookie Consent
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 no WAF or security blocks.
  2. Comprehensive privacy and cookie policies with consent mechanisms are implemented.
  3. Multiple forms use HubSpot with reCAPTCHA Enterprise for spam protection.
  4. Strong social media presence on Facebook, Instagram, LinkedIn, and Twitter.
  5. Use of modern web technologies and frameworks (React, Next.js).
  6. Good SEO and accessibility practices observed.
  7. No explicit security policy or incident response information found.
  8. No exposed sensitive data or obvious vulnerabilities detected.
  9. WHOIS data supports business legitimacy.
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, ensuring a responsive and performant user experience. Integration with HubSpot forms and OneTrust for consent management indicates a mature digital infrastructure. The use of Google Tag Manager, Analytics, and Smartlook provides comprehensive analytics capabilities. The site is well-structured with proper meta tags and SEO optimizations. Accessibility features are implemented, including screen reader support and ARIA roles. Performance is moderate, with room for optimization in loading times. No technical debt or critical risks were identified in the current analysis.
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

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