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Security report for leoburnett.com

Leo Burnett · Media · N/a

Low risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

76/100

Risk levelLow

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

Leo Burnett is a globally recognized advertising agency operating under the Publicis Groupe umbrella. The website currently serves as a placeholder with a 'Coming Soon' message, indicating ongoing development or rebranding. The company offers creative advertising and marketing services targeting businesses seeking brand communication solutions. The domain is well-established, dating back to 1994, and uses corporate DNS infrastructure consistent with its parent company, enhancing its legitimacy. Technically, the website employs modern web technologies including Next.js and React, with integration of Google Analytics for visitor tracking and OneTrust for cookie consent management. The site is mobile optimized and performs moderately well, though content is minimal at this stage. Privacy compliance is addressed through a comprehensive cookie notice and consent mechanism, reflecting adherence to GDPR requirements. Security posture is solid with HTTPS enforced and domain registration protections such as clientTransferProhibited status. However, the absence of security headers and incident response information suggests room for improvement. No vulnerabilities or suspicious activities were detected. Overall, the site demonstrates a professional but basic digital presence, with strategic recommendations to enhance security policies, transparency, and content richness.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

5 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 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. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics

      What to do: Document all third-party data sharing in your privacy policy

  3. 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 leoburnett.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

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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
80
Email security
75
DNS health
80
Network security
100
GDPR outside view
65
Average
76

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention leoburnett.com, from OffSeq Breach.

Total records
284
Employees
0
Customers
4
Third parties
280
Weak passwords
15%

3 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for leoburnett.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Leo Burnett holds a strong market position as a major player in the advertising and media sector, operating globally with a large organizational size. Its business model revolves around providing creative marketing and branding services to corporate clients. The company benefits from its association with Publicis Groupe, a leading global communications group, which supports its infrastructure and domain management. The website's minimal content limits direct insights into revenue streams or growth indicators, but the presence of a cookie consent framework and analytics tools indicates a focus on compliance and data-driven marketing. The Twitter social media link suggests active engagement with audiences. No direct partnerships or subsidiaries were identified from the website content.

Security posture

The website exhibits a moderate to good security maturity level. HTTPS is properly implemented, and the domain status clientTransferProhibited prevents unauthorized transfers. The use of OneTrust for cookie consent demonstrates compliance with privacy regulations. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security is a notable gap. No incident response or security policy information is published, and no security.txt file is present, limiting transparency for vulnerability reporting. No exposed sensitive data or vulnerable libraries were detected. The site currently lacks contact information for security incidents, which could hinder timely response. Overall, the security posture is adequate for a placeholder site but should be enhanced before full launch.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to harden the website against common attacks.
  2. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  3. Publish a security.txt file to facilitate responsible vulnerability disclosure and improve transparency.
  4. Add explicit security and incident response policies on the website, including contact channels for security issues.
  5. Enhance website content with clear business information, contact details, and terms of service to improve credibility and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Leo Burnett
Description
Leo Burnett is a global advertising agency known for creative marketing and brand communication services.
Key services
Advertising, Branding, Marketing, Creative Services
Content quality
basic
Branding
consistent

Technology

Stack
React, Next.js, Google Analytics, OneTrust Cookie Consent
Frameworks
Next.js
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • Client Transfer Prohibited domain status
  • Cookie consent mechanism

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
OneTrust Cookie Consent
Transparency
basic

Site quality

Design
good
User experience
basic
Content relevance
poor
Navigation
poor
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website is currently a 'Coming Soon' placeholder with minimal content.
  2. Cookie consent mechanism is implemented using OneTrust.
  3. No contact information or forms are present on the page.
  4. No explicit privacy or security policies are published on this page, but a privacy and cookie notice is linked.
  5. No terms of service or incident response information found.
  6. No security.txt or vulnerability disclosure information found.
  7. Website uses modern web technologies (Next.js, React).
  8. No suspicious or malicious indicators detected.
  9. WHOIS data supports legitimacy and corporate ownership.
Technical notes

Notes

The website is built using Next.js and React, indicating a modern and scalable frontend framework. It leverages Google Analytics for visitor tracking and OneTrust for cookie consent management, reflecting attention to privacy compliance. The site is hosted with DNS servers under the Publicis Groupe domain, suggesting corporate-grade infrastructure. Performance is moderate with preloading of images and stylesheets, and mobile optimization is good. Accessibility features are basic but present. No CMS was detected, implying a custom or static site build. The site currently serves as a 'Coming Soon' page with minimal content, limiting SEO and user engagement. Technical debt appears low given the modern stack, but further development is needed to realize full functionality.
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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