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Security report for zendesk.kr

Zendesk · Technology · South Korea

Medium risk. 5 critical or high findings in Email security, Security headers and 1 other check.

Security score

71/100

Risk levelMedium

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

Zendesk is a leading global provider of customer service software solutions, trusted by over 200,000 customers worldwide. The Korean localized website offers comprehensive AI-powered customer service tools including AI agents, copilot features, ticketing systems, messaging, and voice services. The company targets enterprises, SMBs, and startups across various industries, emphasizing AI integration and workflow improvements. Technically, the site is built on modern frameworks such as Next.js and React, hosted on Amazon Cloudfront, and employs advanced analytics and consent management tools. Security posture is strong with HTTPS, security headers, and cookie consent mechanisms in place, though the absence of WHOIS data for the domain introduces a minor trust concern. Overall, the website demonstrates high professionalism, excellent content quality, and good privacy compliance, positioning Zendesk as a mature and credible SaaS provider in the customer service technology sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

5 findings rated critical or high. Fix these first.

  1. 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.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

    • High

      No SPF record found

      SPF helps prevent email spoofing

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

  2. 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"

  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 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 zendesk.kr

This scan found 20 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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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
75
Security headers
40
Email security
40
DNS health
75
Network security
100
GDPR outside view
95
Average
71

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

Zendesk operates a SaaS business model focused on customer service and support solutions enhanced by AI technologies. The company serves a broad market including enterprise, SMB, and startup segments, with tailored solutions for industries such as retail, finance, healthcare, government, and telecommunications. Zendesk's competitive advantage lies in its AI integration, comprehensive product suite, and global presence with localized offerings. The website reflects a mature digital marketing and analytics ecosystem, leveraging Google Tag Manager, Segment, and Adobe SDKs. Partnerships and related domains indicate a well-established ecosystem supporting events, support, and community engagement. The lack of public WHOIS data for the Korean domain is unusual but likely due to privacy protection or registry policies.

Security posture

The website enforces HTTPS with strong SSL configuration and includes key security headers such as X-Frame-Options, HSTS, and X-XSS-Protection. Cookie consent is managed via OneTrust, indicating GDPR compliance efforts. No exposed sensitive data or vulnerable libraries were detected in the analysis. The site uses modern analytics and marketing scripts but maintains a good balance with privacy compliance. Recommendations include adding a Content Security Policy header and extending HSTS max-age for enhanced security. Incident response and vulnerability disclosure information are not publicly available, which is common for marketing sites but could be improved for transparency.

Recommendations

  1. Implement a Content Security Policy (CSP) header to mitigate cross-site scripting and data injection attacks.
  2. Increase the max-age value of the Strict-Transport-Security header to at least 6 months for stronger HTTPS enforcement.
  3. Regularly audit and update third-party scripts and libraries to avoid vulnerabilities.
  4. Publish clear incident response and vulnerability disclosure policies to enhance security transparency.
  5. Monitor WHOIS data and domain registration status to ensure consistency and legitimacy.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Zendesk
Description
Zendesk는 20만 명 이상의 고객이 신뢰하고, 수상 경력으로 인정받은 고객 서비스 소프트웨어입니다. 문자, 모바일, 전화, 이메일, 실시간 채팅, 소셜 미디어로 고객의 기대에 부응하세요.
Key services
AI 상담사, 코파일럿, 통합 티켓 관리, 메시징 및 실시간 채팅, 헬프 센터, 음성 서비스, 품질 보증, 데이터 프라이버시 및 보호, 인력 관리
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Adobe Web SDK, Segment Analytics, OneTrust Cookie Consent
Frameworks
Next.js
Platforms
Cloudfront CDN
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • Cookie consent mechanism
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Tag Manager, Segment Analytics, Adobe Web SDK
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Segment Analytics, Adobe Web SDK
Marketing tools
Segment Analytics, Adobe Web SDK
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content in Korean language
  2. Professional SaaS customer service platform with AI integration
  3. Strong branding and consistent design
  4. Comprehensive navigation with multiple product and solution offerings
  5. Good privacy and cookie consent mechanisms
  6. No signs of malicious or suspicious content
  7. WHOIS data missing, which is unusual and warrants monitoring
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, ensuring server-side rendering and good SEO performance. Hosting on Amazon Cloudfront CDN provides fast content delivery globally. The site is mobile-optimized with responsive design and accessibility features. Analytics and marketing integrations are robust, using Google Tag Manager, Segment, and Adobe Web SDK. The site structure is clear with well-organized navigation and comprehensive content in Korean. No CMS was explicitly detected, suggesting a custom or headless CMS solution. Performance is fast with preconnect and dns-prefetch optimizations. Overall, the technical infrastructure supports a high-quality user experience and scalable operations.
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. 72/100Medium26 findingsView report
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