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Security report for onetag-sys.com

OneTag · Technology · N/a

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

60/100

Risk levelMedium

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

OneTag operates an advertising system platform, targeting advertisers and businesses seeking advertising technology solutions. The website is minimalistic, providing basic information and links to a main homepage and privacy policy hosted on a related domain. The business appears small and focused on technology services related to advertising. The domain registration is consistent with the business age and purpose, indicating legitimacy. Technically, the website uses basic HTML and CSS without advanced frameworks or CMS detected. Hosting and DNS are managed via reputable providers, but the site lacks modern security features such as DNSSEC, security headers, and HTTPS enforcement visible in the provided data. The site is mobile responsive at a basic level but lacks SEO and accessibility optimizations. From a security perspective, the site does not expose sensitive data or use vulnerable libraries but lacks visible security best practices such as security headers and incident response information. Privacy compliance is minimal with a basic privacy policy but no cookie consent mechanism or GDPR indicators. No contact or incident response information is provided, limiting trust and transparency. Overall, the website presents a low-risk profile but would benefit from enhanced security measures, improved privacy compliance, and richer business information to increase trustworthiness and professionalism.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

7 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

Need hands-on remediation? Email guard@offseq.com

Keep watching onetag-sys.com

This scan found 26 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

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  • 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
42
Security headers
25
Email security
50
DNS health
90
Network security
100
GDPR outside view
53
Average
60

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

OneTag positions itself as a technology company providing an advertising system platform. The business model likely revolves around offering advertising technology services to advertisers and businesses. The company was founded in 2015, consistent with the domain registration date. The website content is minimal, suggesting a small-sized company with a niche market focus. There is no evidence of partnerships, subsidiaries, or certifications. The lack of contact information and detailed business data limits visibility into revenue streams and growth indicators. The company appears to operate independently without privacy protection on WHOIS, indicating transparency in registration.

Security posture

The current security posture is basic with no advanced security headers or DNSSEC enabled. The domain has multiple status protections preventing unauthorized transfer or deletion, which is positive. However, the absence of HTTPS enforcement and security headers reduces the overall security maturity. No incident response or vulnerability disclosure information is provided, indicating limited readiness for security incidents. Privacy compliance is minimal, lacking cookie consent and GDPR indicators. No analytics or tracking scripts were detected, reducing privacy risks but also limiting marketing insights. Overall, the security posture is functional but requires improvements to meet modern standards.

Recommendations

  1. Enable HTTPS with proper SSL/TLS certificates and enforce HTTPS site-wide.
  2. Implement security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Enable DNSSEC to protect DNS integrity and prevent spoofing.
  4. Publish detailed privacy and cookie policies with consent mechanisms to improve GDPR compliance.
  5. Add contact information and incident response details to enhance transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OneTag
Description
OneTag appears to be an advertising system platform, likely providing advertising technology or services.
Key services
Advertising system platform
Content quality
basic
Branding
consistent

Technology

Stack
HTML5, CSS3
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
30/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

Design
basic
User experience
basic
Content relevance
basic
Navigation
basic
Professionalism
basic
Trustworthiness
low

Key observations

  1. Website is minimalistic with limited content.
  2. No forms or data collection mechanisms detected.
  3. No contact information or social media links present.
  4. No security headers or advanced security features detected.
  5. Privacy policy is present but basic; no cookie policy or consent mechanism.
  6. No analytics or tracking scripts detected.
  7. Website links to a main homepage and privacy policy on a related domain (onetag.com).
  8. No visible certifications or trust seals.
  9. Domain registration is stable and consistent with business claims.
Technical notes

Notes

The website is built with basic HTML and CSS without detectable modern frameworks or CMS. Hosting and DNS are managed by reputable providers (GoDaddy and Constellix). Performance is moderate with basic mobile responsiveness. SEO and accessibility features are minimal. No analytics or tracking technologies are present, indicating limited data collection. The technical infrastructure is stable but lacks modernization and security enhancements such as HTTPS enforcement and security headers. There is an opportunity to improve technical robustness and user experience by adopting modern web standards and security best practices.
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. 61/100Medium34 findingsView report
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