Channel Four Television Corporation · Media · United Kingdom
Low risk. 2 critical or high findings in Email security and SSL/TLS.
Channel 4 Sales operates as the advertising sales arm of Channel Four Television Corporation, providing a comprehensive suite of advertising solutions across TV, video on demand, social media, and digital platforms. The company targets advertisers and brands aiming to reach UK audiences, leveraging Channel 4's strong market presence and partnerships with UKTV and Warner Bros. Discovery. Their services include sponsorship packages, branded entertainment, and retail advertising, positioning them as a key player in the UK media advertising sector. Technically, the website is built on a modern stack using React and Next.js, optimized for performance and mobile responsiveness. The site features rich multimedia content including videos hosted on Brightcove, and integrates social media channels effectively. SEO and accessibility practices are well implemented, contributing to a positive user experience. From a security perspective, the site enforces HTTPS and avoids exposing sensitive data. However, the absence of explicit security headers and a published security or incident response policy indicates room for improvement. The lack of WHOIS data for the domain raises concerns about domain legitimacy, although the website's branding and external links strongly associate it with Channel 4. Overall, the security posture is good but could be enhanced with additional transparency and controls. Strategically, the site is well positioned to serve its target market but should address the WHOIS transparency issue and improve security disclosures to strengthen trust and compliance. Continued investment in security best practices and privacy compliance will support long-term business credibility and operational resilience.
Scanned
NIS2 Art. 21(2)
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.
2 findings rated critical or high. Fix these first.
SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.
Domain is vulnerable to email spoofing
What to do: Implement SPF, DKIM, and DMARC immediately
TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.
Server supports weak protocols: TLSv1.1
What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions
Need hands-on remediation? Email guard@offseq.com
This scan found 19 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.
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Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention 4sales.com, from OffSeq Breach.
2 subdomains affected
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Breach keeps ingesting new leaks, so these numbers can grow between scans.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Automated reading of the public site. Ratings are indicative.
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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