eyeo GmbH · Technology · Germany
Medium risk. 2 critical or high findings in Security headers and SSL/TLS.
eyeo GmbH is a technology company specializing in ad-filtering solutions that enhance advertising effectiveness and user experience. Established since 1999, the company targets advertisers, publishers, retailers, tech partners, and end users with its innovative technology. The website reflects a mature digital presence with comprehensive privacy and security policies, supported by a cookie consent mechanism via OneTrust. The company maintains active social media channels on LinkedIn, Twitter, and YouTube, reinforcing its market position and engagement. Technically, the website employs modern JavaScript frameworks and libraries, including htmx, Google Analytics, and Sentry for error monitoring. The site is hosted with a reputable registrar and uses UltraDNS for DNS services, though DNSSEC is not enabled. Performance and mobile optimization are good, with accessibility and SEO features well implemented. Security posture is solid with HTTPS enforced and clientTransferProhibited domain status, but could be improved by enabling DNSSEC and adding explicit security headers. Security-wise, the site shows good practices such as encrypted connections, cookie consent, and error monitoring. However, there is no public vulnerability disclosure or security.txt file, and incident response contact details are not explicitly provided. No vulnerabilities or exposed sensitive data were detected. Overall, the risk profile is low, with recommendations to enhance DNS security and transparency. In summary, eyeo.com is a professional, secure, and privacy-conscious website representing a legitimate and established technology business. Strategic improvements in DNS security and incident response transparency would further strengthen its security posture and trustworthiness.
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.
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.
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
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
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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 eyeo.com, from OffSeq Breach.
1 subdomain 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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