Nielsen Admosphere, a.s. · Media · Czech Republic
Medium risk. 3 critical or high findings in Email security, SSL/TLS and 1 other check.
Nielsen Admosphere, a.s. is a well-established research agency operating primarily in the Czech Republic, specializing in media market research, TV audience measurement, advertising monitoring, and marketing data analysis. The company is part of the global Nielsen network, leveraging international expertise while providing localized solutions. Their services cater to media companies, advertisers, and marketing professionals seeking detailed and reliable data insights. The website reflects a mature business with a professional digital presence, offering comprehensive product information and client testimonials that reinforce their market position. Technically, the website is built on the Webflow platform, utilizing modern web technologies including Google Analytics and Tag Manager for analytics and tracking. The site is mobile-optimized, accessible, and performs moderately well. Cookie consent mechanisms and privacy policies indicate good compliance with GDPR requirements. However, some security best practices such as additional HTTP security headers and explicit security policies are missing. From a security perspective, the site uses HTTPS with strong encryption and anonymizes IP addresses in analytics, which is positive. The absence of WHOIS data for the domain is a concern, reducing trustworthiness and suggesting the need for further verification of domain registration legitimacy. No critical vulnerabilities or malicious content were detected on the site. Overall, Nielsen Admosphere presents a credible and professional business with a solid digital footprint. Strategic improvements in security transparency and domain registration clarity would enhance trust and compliance posture.
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.
3 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
DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.
MX record points to unregistered domain: gw.mediaresearch.cz
What to do: Remove or fix MX record pointing to unregistered domain
Need hands-on remediation? Email guard@offseq.com
This scan found 22 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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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.
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 nielsen-admosphere.cz, from OffSeq Breach.
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 nielsen-admosphere.cz.
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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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