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Security report for seenthis.se

SEENTHIS AB · Technology · France

Low risk. 4 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

SEENTHIS AB operates the website seenthis.co, providing advanced digital advertising technology focused on instant delivery and amplification of high-quality creatives to boost engagement and business outcomes. The company targets brands, agencies, and publishers seeking innovative advertising solutions. The website demonstrates a modern technical infrastructure using Gatsby, React, and cloud-based hosting with good performance and mobile optimization. Security posture is strong with HTTPS, security headers, and domain transfer protections, though DNSSEC is not enabled and no explicit security policy or incident response information is published. Privacy compliance is well addressed with a comprehensive privacy policy and cookie consent mechanism. Overall, the site reflects a professional and trustworthy business with clear branding and good user experience.

Scanned

This is an earlier scan of seenthis.se. View the latest report

NIS2 and GDPR posture

GDPR outside view
85/ 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 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 Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 seenthis.se

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.

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
52
Security headers
65
Email security
75
DNS health
80
Network security
100
GDPR outside view
85
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

Technical appendix

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

Business context

Business profile

SEENTHIS AB is positioned as an innovative player in the digital advertising technology sector, emphasizing quality and sustainability in creative delivery. Their business model is B2B, serving global brands and agencies with technology that improves ad engagement and reduces data waste. The company has a medium size profile, founded in 2017 in France, with no public parent or subsidiaries. Their partnership ecosystem includes major global brands and agencies as clients. The website content and social media presence support a credible and growth-oriented business focused on performance and transparency.

Security posture

The website exhibits a mature security posture with enforced HTTPS, multiple security headers, and domain transfer lock status. No vulnerabilities or exposed sensitive data were detected in the content. However, the absence of a published security policy, incident response contacts, or vulnerability disclosure program represents a compliance gap. DNSSEC is not enabled, which is a recommended improvement for DNS security. Privacy compliance is strong with GDPR-aligned policies and cookie consent. Overall, the security maturity is good but could be enhanced by publishing formal security and incident response documentation.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish a dedicated security policy page outlining security practices and controls.
  3. Provide incident response contact information or a dedicated security email address.
  4. Implement a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Continue to monitor and update privacy and cookie compliance mechanisms to align with evolving regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SEENTHIS AB
Description
SeenThis instantly activates high-quality creatives, boosting engagement by 70% and driving powerful outcomes. They pioneer instant delivery of high-quality creatives, driving sustainable business outcomes with efficiency and transparency.
Key services
Instant delivery of high-quality creatives, Adaptive streaming technology, Creative amplification, Advertising performance optimization
Content quality
good
Branding
consistent

Technology

Stack
Gatsby, React, Google Tag Manager, Cookiebot, AWS DNS
Frameworks
Gatsby
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • No DNSSEC (improvement opportunity)
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics, LinkedIn Insight
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
LinkedIn Insight, Google Analytics (via GTM)
Marketing tools
Cookiebot
Transparency
good

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is professionally designed with clear branding and messaging.
  2. Content focuses on digital advertising technology and creative delivery.
  3. Privacy and cookie policies are present and GDPR compliant.
  4. Contact options include a contact form and newsletter subscription.
  5. No explicit phone numbers or physical addresses found in the content.
  6. Social media presence on LinkedIn and Instagram.
  7. No terms of service or security policy pages detected.
  8. No explicit incident response or vulnerability disclosure information.
  9. Uses modern web technologies and good security practices.
  10. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website is built on a modern static site generator (Gatsby) leveraging React, which supports fast loading and good SEO. Hosting appears to be on AWS infrastructure, indicated by DNS nameservers. The site uses Google Tag Manager and Cookiebot for analytics and consent management. Performance is optimized with responsive images and lazy loading. Accessibility is basic but functional. The technical stack is modern and well implemented, with opportunities to improve DNS security and formalize 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

Earlier scans of this domain

  1. 75/100Medium11 findings · partial scanView report
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