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Security report for t-systems.at

T-Systems International GmbH · Telecommunications · Austria

High risk. 9 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

42/100

Risk levelHigh

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

T-Systems International GmbH is a large enterprise specializing in telecommunications and IT infrastructure services primarily targeting business and enterprise customers. The company operates under the parent company Deutsche Telekom AG and has a significant presence in Austria. The website at t-systems.at currently returns a 403 Forbidden error, indicating restricted access or blocking, which prevents content visibility and detailed analysis of the site’s offerings or policies. Technically, the site lacks HTTPS support and modern security configurations, which is a critical security concern. The DNS setup is consistent with the organization, but no DNSSEC or CAA records are configured. Overall, the site’s digital maturity appears low due to the lack of accessible content and security best practices.

Scanned

This is an earlier scan of t-systems.at. View the latest report

NIS2 and GDPR posture

GDPR outside view
0/ 100 · Critical
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

9 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  2. 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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. 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"

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

Keep watching t-systems.at

This scan found 19 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
0
Security headers
15
Email security
50
DNS health
85
Network security
100
GDPR outside view
0
Average
42

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

T-Systems operates in the telecommunications sector with a B2B business model focusing on IT infrastructure, cloud services, and digital transformation solutions. The domain registration and DNS records align with the company’s identity and location, supporting legitimacy. However, the website’s inaccessibility and lack of visible business or contact information limit the ability to assess customer engagement or marketing strategies. The company likely relies on other channels for customer interaction. No advertising or analytics technologies were detected, suggesting minimal direct digital marketing on this domain.

Security posture

The security posture of the website is poor, with no SSL/TLS certificate installed, no HSTS, and no secure cipher suites enabled. The site is served over HTTP only, exposing users to potential interception risks. The 403 Forbidden response may indicate intentional blocking or misconfiguration but also prevents assessment of security policies or incident response information. No security headers or vulnerability disclosures are present. DNSSEC and CAA are not enabled, reducing DNS security. Overall, the site does not meet modern security standards and requires urgent improvements to protect user data and trust.

Recommendations

  1. Implement a valid SSL/TLS certificate to enable HTTPS and secure communications.
  2. Configure HTTP Strict Transport Security (HSTS) with includeSubDomains and preload options.
  3. Add essential security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options.
  4. Enable DNSSEC and CAA records to improve DNS security and certificate issuance control.
  5. Review and resolve the 403 Forbidden error to allow legitimate user access or provide informative error pages.
  6. Publish privacy, cookie, and security policies to improve compliance and user trust.
  7. Implement vulnerability disclosure and incident response information to enhance security transparency.
  8. Improve website content quality, accessibility, and SEO to enhance user experience and digital presence.
Technical notes

Notes

The website is hosted behind an AWS Elastic Load Balancer but lacks HTTPS support, indicating incomplete or misconfigured hosting setup. No CMS, frameworks, or modern web technologies were detected due to the minimal HTML content. Performance metrics are unavailable due to blocked content. DNS records are properly configured with multiple MX and NS entries consistent with the organization. The absence of DNSSEC and CAA records is a technical gap. Overall, the technical infrastructure requires modernization and security hardening to meet enterprise standards.
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. 41/100High29 findingsView report
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