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Security report for sabanci.com

Sabancı Holding · Finance · Turkey

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

69/100

Risk levelMedium

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

Sabancı Holding is a historic and leading Turkish conglomerate founded in 1967, operating across multiple sectors including banking, energy, materials, and digital technologies. The company maintains a strong market position with diversified subsidiaries such as Akbank and Sabancı University. The website reflects a mature digital presence with comprehensive corporate information, sustainability initiatives, and investor relations content. Technically, the site uses modern web technologies including ASP.NET, jQuery, Bootstrap, and Google Tag Manager, providing a responsive and accessible user experience. Security posture is solid with HTTPS enforced and proactive user warnings about fraud, though explicit security headers could be improved. Privacy compliance is well addressed with clear policies and cookie consent mechanisms. Overall, the site is professional, trustworthy, and aligns well with the company's stature, though the absence of WHOIS data slightly reduces domain trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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 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 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching sabanci.com

This scan found 21 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

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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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
62
Security headers
65
Email security
60
DNS health
75
Network security
100
GDPR outside view
50
Average
69

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

Sabancı Holding operates as a diversified holding company with key business units in banking, energy, materials, and digital sectors. Its business model focuses on strategic investments and innovation leadership, particularly in sustainability and technology. The company targets investors, partners, and the general public interested in corporate governance and sustainability. The presence of multiple subsidiaries and partner organizations enhances its ecosystem. The website's content and structure support transparency and stakeholder engagement, indicating a mature corporate communication strategy. Growth indicators include active sustainability programs and digital transformation efforts. The partnership ecosystem includes foundations, universities, and museums, reinforcing social responsibility and brand strength.

Security posture

The website demonstrates a good security posture with HTTPS enabled and a cookie consent mechanism in place. A dedicated popup warns users about fraud attempts impersonating the company, showing awareness of social engineering risks. However, the site lacks explicit security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options, which are recommended to harden security. No vulnerabilities or exposed sensitive data were detected in the HTML content. Incident response contact is provided via an email address for ethical concerns. The absence of a published security policy or vulnerability disclosure program is a gap. Overall, the security maturity is good but could be enhanced with additional headers and formal security documentation.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to improve protection against common web attacks.
  2. Publish a formal security policy and incident response page to increase transparency and user trust.
  3. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  4. Regularly audit and update third-party scripts and libraries to mitigate risks from vulnerable dependencies.
  5. Enhance accessibility features with ARIA landmarks and semantic HTML to improve usability for all users.

Contact details published on the site

Addresses
Legal name
HACI ÖMER SABANCI HOLDİNG A.Ş.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sabancı Holding
Description
Türkiye'nin en köklü kuruluşlarından olan Sabancı Holding bünyesinde bir çok sektörden şirket barındırmaktadır.
Key services
Banking and financial services, Energy and climate technologies, Material technologies, Digital technologies, Other sectors
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Owl Carousel, Google Tag Manager, ASP.NET WebForms
Frameworks
ASP.NET
Platforms
Windows Server (implied by ASP.NET)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • Security awareness popup warning users about fraud
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

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 navigation
  2. Strong corporate branding and consistent design
  3. Comprehensive corporate and sustainability information
  4. Cookie consent and privacy policies present and well implemented
  5. No security headers explicitly detected in HTML but HTTPS is used
  6. WHOIS data unavailable, possibly due to privacy or registry restrictions
  7. Security awareness popup indicates proactive fraud prevention
  8. Use of modern JS libraries and Google Tag Manager for analytics
  9. No adult or questionable content detected
  10. Multiple social media and partner links consistent with corporate identity
Technical notes

Notes

The website is built on ASP.NET WebForms platform, utilizing jQuery, Bootstrap, and Owl Carousel for UI components and responsiveness. Google Tag Manager is used for analytics and marketing tracking. The site is mobile optimized with responsive design and good accessibility practices. Performance is moderate, with potential improvements in loading speed by optimizing scripts and assets. The technical stack is modern but could benefit from modernization to newer frameworks for maintainability. No CMS is explicitly detected. Hosting provider details are not available. The site uses structured data (JSON-LD) for SEO and rich snippets, enhancing search engine visibility. Overall, the technical infrastructure supports a professional corporate website with room for optimization.
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

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