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Security report for oestu-stettin.at

ÖSTU-STETTIN Hoch- und Tiefbau GmbH · Energy · Austria

High risk. 8 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

48/100

Risk levelHigh

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

ÖSTU-STETTIN Hoch- und Tiefbau GmbH is a large Austrian construction company specializing in underground and high-rise construction projects worldwide. As part of the HABAU GROUP, it offers a comprehensive range of services including mining, garage construction, general contracting, industrial construction, and tunnel building. The website is professionally designed, multilingual (German and English), and provides detailed service information targeting clients in the construction and infrastructure sectors globally. Technically, the site is built on WordPress with a mature plugin ecosystem and hosted on Azure DNS infrastructure. However, a critical security gap exists due to the absence of a valid SSL certificate and HTTPS support, exposing users to potential risks. Privacy compliance is well addressed with a GDPR-compliant cookie consent mechanism and a comprehensive privacy policy. No explicit security or incident response policies are published, and no direct contact emails or phone numbers are visible, though social media channels and contact forms are available. Overall, the site demonstrates good business credibility and content quality but requires urgent security improvements to protect visitors and enhance trust.

Scanned

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

8 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 oestu-stettin.at

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.

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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
85
DNS health
85
Network security
100
GDPR outside view
0
Average
48

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

The company operates in the energy and manufacturing sectors with a strong focus on underground and high-rise construction. Its affiliation with the HABAU GROUP positions it well in the European construction market. The business model revolves around providing turnkey construction solutions globally, leveraging expertise in specialized construction domains. The website supports this with detailed service pages and multilingual support, indicating a strategy to attract international clients. The presence of a dedicated careers subdomain suggests ongoing growth and talent acquisition. The company maintains a professional digital presence but lacks visible direct contact details, possibly favoring controlled communication channels. The use of Azure DNS and Outlook mail protection MX records indicates a professional IT infrastructure supporting business operations.

Security posture

The website's security posture is weak due to the lack of a valid SSL certificate and disabled TLS protocols, resulting in no HTTPS availability. This is a critical vulnerability that undermines user trust and exposes data transmissions to interception. No advanced security headers or mechanisms like HSTS or OCSP stapling are implemented. The site is free from known SSL/TLS vulnerabilities such as Heartbleed or POODLE, and no subdomain takeover risks are detected. The absence of published security policies or incident response contacts limits transparency and preparedness. Overall, the site requires immediate remediation of SSL/TLS issues and enhancement of security best practices to meet modern standards and regulatory requirements.

Recommendations

  1. Install and maintain a valid SSL/TLS certificate to enable HTTPS across the entire site.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) and disable deprecated versions to secure communications.
  3. Implement HTTP Strict Transport Security (HSTS) with includeSubDomains and preload to enforce HTTPS usage.
  4. Enable OCSP stapling to improve certificate revocation checking performance and security.
  5. Publish clear security policies and incident response contact information to enhance transparency and trust.
  6. Regularly audit and update server security headers and configurations to align with best practices.
Technical notes

Notes

The website is built on WordPress 6.8.1 using a variety of plugins including WPBakery Page Builder, Slider Revolution, Contact Form 7, WPML for multilingual support, and Complianz for GDPR cookie consent. It uses Apache as the web server and Azure DNS for domain name resolution. The site loads jQuery 3.7.1 and several custom scripts for enhanced user experience. Performance metrics are not available, but the site appears to be mobile optimized with responsive design. SEO is supported by proper meta tags and multilingual hreflang links. However, the lack of HTTPS and modern TLS protocols is a significant technical debt and security risk. The site would benefit from performance optimization and accessibility improvements to enhance user experience further.
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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