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Security report for channel4sales.com

Channel Four Television Corporation · Media · United Kingdom

Low risk. 2 critical or high findings in Email security and SSL/TLS.

Security score

79/100

Risk levelLow

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

Channel 4 Sales operates as the advertising sales arm of Channel Four Television Corporation, offering a broad range of advertising solutions across TV, video on demand, social media, and digital platforms. The website presents a professional and comprehensive showcase of their services, targeting advertisers and agencies seeking to leverage Channel 4's audience reach. The site is well-branded, consistent with Channel 4's corporate identity, and includes multimedia content to engage visitors. Technically, the website is built on modern web technologies including React and Next.js, with good mobile optimization and accessibility features. The use of Brightcove for video content indicates a mature digital infrastructure. Performance appears fast and SEO practices are well implemented through meta tags and structured content. From a security perspective, the site enforces HTTPS and uses secure forms, but lacks visible security headers and explicit security or incident response policies. No vulnerabilities or exposed sensitive data were detected. Privacy compliance is strong with clear privacy and cookie policies and consent mechanisms in place. Overall, the site is trustworthy and professional, though the absence of WHOIS data for the domain raises questions about domain registration status. Verification of domain legitimacy is recommended to fully confirm trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

2 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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

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

Keep watching channel4sales.com

This scan found 18 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
82
Security headers
75
Email security
60
DNS health
75
Network security
100
GDPR outside view
83
Average
79

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

Channel 4 Sales holds a strong market position as a major UK media sales house affiliated with Channel Four Television Corporation. Their business model focuses on selling advertising inventory and integrated marketing solutions across multiple media channels. The company targets brands and agencies looking to reach Channel 4's audience, particularly young viewers. Their offerings include sponsorships, social branded entertainment, and retail advertising, reflecting a diversified revenue stream. The website's partnership ecosystem includes Channel 4 corporate sites and an agency portal, indicating a well-integrated operational structure. Growth indicators include multimedia content and showcases of business-for-good initiatives, enhancing brand reputation.

Security posture

The website demonstrates a moderate to strong security posture with mandatory HTTPS and secure form handling. However, the lack of explicit security headers such as Content-Security-Policy and Strict-Transport-Security is a gap that could be addressed to enhance protection against common web attacks. No incident response or vulnerability disclosure information is publicly available, which could limit transparency and responsiveness to security issues. Privacy compliance is well addressed, aligning with GDPR requirements. Overall, the security maturity is good but could be improved with additional security controls and published policies.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security to strengthen web security.
  2. Publish an incident response and vulnerability disclosure policy to improve transparency and readiness for security events.
  3. Verify and update WHOIS domain registration information to ensure domain legitimacy and trust.
  4. Enhance monitoring for third-party scripts and dependencies to prevent potential vulnerabilities.
  5. Maintain and regularly update privacy and cookie policies to stay compliant with evolving regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Channel Four Television Corporation
Description
Advertising with 4 Sales isn’t just about the 30-second TV spot. They offer multiple advertising opportunities including sponsored programmes, digital opportunities, integrated partnerships, and airtime sales.
Key services
TV advertising campaigns, Digital marketing solutions, Sponsorship packages, Social branded entertainment, Linear and Video On Demand, Retail advertising
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, CSS, Brightcove video player
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure forms with no exposed sensitive data
  • No visible vulnerable libraries

Analytics and tracking

Tracking level
moderate
Privacy practices
good

Advertising

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 multimedia content
  2. Strong branding consistent with Channel 4 corporate identity
  3. Multiple social media links to official Channel 4 accounts
  4. Comprehensive privacy, cookie, and terms policies linked in footer
  5. Contact form present for business inquiries
  6. No exposed emails or phone numbers found in HTML
  7. No security.txt or explicit security policy pages found
  8. No WHOIS data available, indicating possible domain registration issues
Technical notes

Notes

The website leverages a modern technology stack with React and Next.js frameworks, enabling server-side rendering and fast performance. The use of Brightcove for video delivery supports rich multimedia content. The site is mobile-optimized with responsive design and accessibility considerations. SEO is supported by comprehensive meta tags and Open Graph data. No major technical debt or outdated libraries were detected. Hosting details are not explicit but inferred to be professional and stable. Opportunities exist to improve security headers and publish additional security documentation.
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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