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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

72/100

Risk levelMedium

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

Zendesk is a leading global provider of customer service software solutions, offering a comprehensive suite of AI-powered tools and services tailored for businesses seeking to enhance their customer support capabilities. The Korean localized website reflects Zendesk's strong market presence and commitment to delivering scalable, customizable customer service platforms. The technical infrastructure leverages modern web technologies such as React and Next.js, hosted on Amazon Cloudfront, ensuring fast performance and excellent mobile optimization. Security posture is robust with HTTPS enforcement, security headers, and privacy compliance mechanisms including GDPR adherence and cookie consent banners. However, the absence of publicly available WHOIS data for the domain www.zendesk.kr introduces some uncertainty regarding domain registration transparency. Overall, the website demonstrates high professionalism, trustworthiness, and technical maturity.

Scanned

This is an earlier scan of zendesk.kr. View the latest report

NIS2 and GDPR posture

GDPR outside view
100/ 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 19 issues across 5 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
75
Security headers
40
Email security
40
DNS health
75
Network security
100
GDPR outside view
100
Average
72

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 primarily in the technology sector, focusing on SaaS delivery of customer service solutions. Its business model revolves around subscription-based software services with AI enhancements such as AI agents and copilots. The company targets enterprises and medium to large businesses requiring integrated ticketing, messaging, and voice support. Zendesk's market position is strong, supported by extensive global reach and localized offerings. The partnership ecosystem includes event platforms and social media channels to engage customers and promote brand awareness. Growth indicators include active AI product development and digital marketing investments. Strategic observations highlight Zendesk's focus on innovation, compliance, and customer-centric solutions.

Security posture

Zendesk's security maturity is high, with implementation of HTTPS, security headers like X-Frame-Options and HSTS, and adherence to ISO 27001 standards. Privacy policies and cookie consent mechanisms indicate compliance with GDPR and other data protection regulations. No critical vulnerabilities or exposed sensitive data were detected in the website content. However, the lack of a published security.txt file and explicit Content Security Policy headers suggests room for improvement in transparency and defense-in-depth. Incident response contact information is not prominently available, which could be enhanced to improve security readiness and trust. Overall, Zendesk maintains a strong security culture aligned with industry best practices.

Recommendations

  1. Implement and publish a Content Security Policy (CSP) header to mitigate XSS and related attacks.
  2. Publish a security.txt file to facilitate responsible vulnerability disclosure and improve transparency.
  3. Enhance incident response visibility by providing dedicated security contact channels on the website.
  4. Regularly audit and update third-party scripts and libraries to minimize potential vulnerabilities.
  5. Continue to monitor and improve privacy compliance and user consent mechanisms in line with evolving regulations.

Contact details published on the site

Addresses
Legal name
Zendesk, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Zendesk
Description
Zendesk는 20만 명 이상의 고객이 신뢰하는 수상 경력에 빛나는 고객 서비스 소프트웨어입니다. 문자, 모바일, 전화, 이메일, 실시간 채팅, 소셜 미디어로 고객의 기대에 부응하세요.
Key services
AI 상담사, 코파일럿, 통합 티켓 관리, 메시징 & 실시간 채팅, 헬프 센터, 음성, 품질 보증
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Marketo, OneTrust, Adobe Web SDK, Sentry
Frameworks
Next.js
Platforms
Cloudfront (AWS CDN)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy not explicitly found but security headers present
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Analytics, Marketo, Sentry
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Marketo, OneTrust, Sentry
Marketing tools
Marketo, OneTrust
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 and no blocking detected.
  2. Strong branding consistent with Zendesk global presence.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. Use of modern web technologies and frameworks.
  5. Good security headers and HTTPS enforcement.
  6. No suspicious or malicious content detected.
  7. WHOIS data missing or domain not registered publicly, which is unusual but not necessarily malicious.
Technical notes

Notes

The website is built on a modern technology stack including React and Next.js, ensuring server-side rendering and fast load times. Hosting on Amazon Cloudfront CDN provides global content delivery and scalability. Integration with marketing and analytics tools such as Google Tag Manager, Marketo, OneTrust, and Sentry indicates a mature digital marketing and monitoring infrastructure. The site is well-optimized for mobile devices and accessibility, with proper meta tags and SEO practices. No major technical debt or performance bottlenecks were observed. Opportunities exist to further enhance security headers and incident response mechanisms to reduce technical risks.
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. 71/100Medium27 findingsView report
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