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Security report for nhnad.com

NHN AD Corp. · Technology · South Korea

Medium risk. 7 critical or high findings in Security headers and GDPR outside view.

Security score

65/100

Risk levelMedium

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

NHN AD Corp. is a South Korean digital marketing company specializing in advertising platforms, UI/UX consulting, design, and digital content services. It operates as part of the NHN Group, leveraging partnerships with major advertising and media platforms such as Meta, Kakao, Naver, Google, and TikTok. The company targets businesses seeking comprehensive digital marketing solutions and positions itself as a key player in the Korean digital advertising market. The website reflects a professional and consistent brand image with good content quality and user experience. Technically, the website employs modern web technologies including JavaScript, React-like SPA frameworks, Bootstrap for responsive design, and integrates Google Tag Manager and Naver Maps API. The site is mobile-optimized and SEO-friendly but lacks some advanced accessibility features and explicit cookie consent mechanisms. Performance is moderate with room for improvement in security headers and privacy compliance. From a security perspective, the site uses HTTPS and implements client-side form validation but does not expose detailed security policies or incident response information. The absence of WHOIS data for the domain reduces trust slightly, though the business legitimacy is supported by consistent branding, contact information, and NHN Group affiliation. No critical vulnerabilities or adult content were detected, and the site is safe for general audiences. Overall, NHN AD presents a credible and professional digital marketing service with moderate technical maturity and security posture. Strategic improvements in privacy compliance, security headers, and domain registration transparency would enhance trust and compliance.

Scanned

This is an earlier scan of nhnad.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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

      No Cookie Policy found

      GDPR requires clear information about cookie usage

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

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

Keep watching nhnad.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.

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
100
Security headers
15
Email security
60
DNS health
80
Network security
100
GDPR outside view
35
Average
65

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

NHN AD operates within the digital marketing and advertising sector, leveraging a strong partnership ecosystem with leading global and local platforms. Its business model focuses on providing tailored digital marketing services to diverse industries, supported by NHN Group's broad service portfolio. The company benefits from established brand recognition and a medium-sized operational scale. Revenue streams likely include advertising campaign management, platform solutions, and consulting services. The partnership network enhances competitive advantage by enabling access to multiple ad networks and data analytics tools. Growth indicators include active recruitment and continuous service updates. Strategic observations highlight the importance of maintaining compliance with evolving privacy regulations and enhancing digital trust through transparent domain registration and security disclosures.

Security posture

The security posture of NHN AD is moderate. The website uses HTTPS, which is mandatory for secure communications. Client-side validation on forms reduces input risks, but the absence of security headers such as Content Security Policy (CSP), X-Frame-Options, and HSTS weakens defense-in-depth. No explicit security or incident response policies are published, limiting transparency and preparedness indicators. The lack of a security.txt file or vulnerability disclosure program suggests limited formal vulnerability management. Privacy compliance is basic, with no cookie consent mechanism detected, which may expose the company to GDPR or other privacy regulation risks. Overall, the security culture appears nascent but functional, with room for significant improvement in policy publication, technical controls, and compliance mechanisms.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Deploy a cookie consent banner and update privacy policies to explicitly address GDPR and other privacy regulations compliance.
  3. Publish a security policy and incident response plan on the website to improve transparency and readiness.
  4. Verify and update WHOIS domain registration information to improve domain legitimacy and trustworthiness.
  5. Regularly audit third-party scripts and libraries for vulnerabilities and ensure secure loading practices.

Contact details published on the site

Addresses
Legal name
NHN AD Corp.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NHN AD Corp.
Description
디지털마케팅, 광고 플랫폼 및 솔루션, UI/UX컨설팅, 디자인, 디지털콘텐츠 서비스
Key services
Digital marketing services, Advertising platform and solutions, UI/UX consulting, Design, Digital content services
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Naver Maps API
Frameworks
Bootstrap (navbar classes), AOS (Animate On Scroll)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • Use of HTTPS (implied by URL https://www.nhnad.com/)
  • Form validation patterns on inputs

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Meta, Kakao, Naver, Criteo, Apple Search Ads, Adjust, RTB House, TikTok, Google, Facebook, Buzzvil, Taboola
Marketing tools
Adjust, Appsflyer, Branch
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no WAF or blocking.
  2. Content is primarily in Korean with professional business focus.
  3. Strong affiliation with NHN Group and major advertising platforms.
  4. No explicit privacy or cookie consent mechanisms detected.
  5. WHOIS data unavailable, limiting domain trust verification.
  6. Contact form collects detailed business inquiry information with validation.
  7. Multiple partner logos indicate broad advertising network integration.
  8. No security.txt or incident response info found.
  9. No explicit GDPR compliance statements.
Technical notes

Notes

The website is built using modern JavaScript frameworks, likely React, combined with Bootstrap for responsive design. It integrates Google Tag Manager for analytics and Naver Maps API for location services. The site is mobile-optimized and SEO-friendly with proper meta tags and structured navigation. Performance is moderate, with potential improvements in load speed and accessibility features. No CMS was detected, suggesting a custom or proprietary platform. Hosting provider details are not disclosed. The technical stack supports a professional digital marketing service but would benefit from enhanced security configurations and privacy compliance tools.
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. 65/100Medium31 findingsView report
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