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Security report for zweiblog.com

CS2 AG · Technology · Switzerland

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

80/100

Risk levelLow

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

CS2 AG is a well-established Swiss digital and web agency founded in 1997, specializing in digital strategy, consulting, web development, and hosting services primarily for SMEs and large enterprises. Their website, Zweiblog, serves as a knowledge hub offering expert insights on CMS, e-commerce, AI, and web technologies tailored for the Swiss market. The company demonstrates a mature digital infrastructure using TYPO3 CMS and integrates modern analytics and marketing tools with GDPR-compliant cookie consent mechanisms. Security posture is solid with HTTPS and reCAPTCHA usage, though explicit security headers and privacy policy pages could be improved. The absence of public WHOIS data slightly reduces domain transparency but does not detract significantly from the company's legitimacy. Overall, the website is professional, well-branded, and trustworthy, serving its target audience effectively.

Scanned

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

2 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 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. 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 Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching zweiblog.com

This scan found 17 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.

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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
62
Security headers
85
Email security
70
DNS health
60
Network security
100
GDPR outside view
100
Average
80

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

CS2 AG holds a strong market position as a leading Swiss digital agency with a focus on open-source technologies like TYPO3, Magento, and Laravel. Their business model revolves around providing end-to-end digital solutions including strategy, UX/UI design, development, and hosting. The company targets decision-makers such as CEOs, CIOs, and marketing leaders, offering content in multiple formats including blogs, videos, and podcasts. Their partnership ecosystem includes podcast hosting and social media platforms, enhancing their digital reach. Growth indicators include a portfolio of over 800 projects and a solid employee base of 38. The company maintains a consistent brand presence and leverages multiple marketing and analytics tools to optimize client engagement and performance.

Security posture

The website employs HTTPS with a good SSL configuration and uses reCAPTCHA to mitigate bot traffic. A comprehensive GDPR cookie consent mechanism is implemented, allowing granular user control over necessary, functional, and marketing cookies. However, no explicit security headers (such as CSP, HSTS, or X-Frame-Options) were detected in the provided data, representing an area for improvement. No vulnerabilities or exposed sensitive data were found in the HTML content. The absence of a published security policy or incident response contact limits transparency in security governance. Overall, the security posture is good but could be enhanced by adding security headers and explicit security documentation.

Recommendations

  1. Implement HTTP security headers including Content Security Policy (CSP), HSTS, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Publish a clear privacy policy page detailing data processing practices and user rights to improve GDPR compliance transparency.
  3. Add a security policy and incident response contact information to enhance trust and preparedness for security incidents.
  4. Regularly audit third-party scripts and marketing tools for vulnerabilities and privacy compliance.
  5. Consider publishing a security.txt file to facilitate responsible vulnerability disclosure.

Contact details published on the site

Addresses
Legal name
CS2 AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CS2 AG
Description
CS2 ist eine führende inhabergeführte Digital- & Webagentur in der Schweiz mit Fokus auf KMUs und Grossunternehmen. Mit Sitz in Sissach, Baselland, wurde CS2 1997 gegründet und hat über 800 Web-Projekte erfolgreich realisiert. Die Agentur bietet Dienstleistungen in den Bereichen Strategie, Beratung, Projektleitung, UX/UI Design, Webentwicklung, Hosting und Betrieb. CS2 ist spezialisiert auf TYPO3, Magento, Laravel sowie E-Commerce- und Individualapplikationen auf Open-Source-Basis.
Key services
Digital Strategy, Consulting, Project Management, UX/UI Design, Web Development, Hosting, TYPO3 CMS, Magento, Laravel, E-Commerce
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, JavaScript, Google Tag Manager, Google Analytics, Bootstrap, Swiper, jQuery, LazySizes, Vimeo API, YouTube API
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner with granular controls
  • No exposed sensitive data in HTML
  • Use of reCAPTCHA for bot protection

Analytics and tracking

Services
Google Analytics, Microsoft Clarity, Funnelytics, SalesViewer
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
LinkedIn, Facebook, TikTok, X (Twitter), Instagram
Tracking pixels
LinkedIn Insight Tag, Facebook Pixel, TikTok Pixel, Microsoft Clarity
Marketing tools
Funnelytics, Apollo.io, SalesViewer
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 no blocking or WAF challenge.
  2. Comprehensive GDPR cookie consent mechanism implemented with detailed categories and granular controls.
  3. No explicit privacy policy or terms of service page detected in the provided content.
  4. Contact information is clearly presented in structured data with company email and phone number.
  5. Website uses modern technologies and frameworks with good SEO and accessibility practices.
  6. Multiple marketing and analytics tools are used with user consent mechanisms.
  7. WHOIS data is missing or not publicly available, which reduces domain transparency.
  8. Content is professional, relevant, and safe for general audiences.
Technical notes

Notes

The website is built on TYPO3 CMS, a robust open-source content management system, and uses modern JavaScript libraries and frameworks such as jQuery, Bootstrap, and Swiper for UI components and responsiveness. Google Tag Manager and Google Analytics are integrated for analytics, alongside Microsoft Clarity and other marketing tools. The site demonstrates good SEO practices with comprehensive meta tags and structured data in JSON-LD format. Performance is moderate with asynchronous loading of scripts and lazy loading of images. Mobile optimization and accessibility are well addressed, providing a good user experience across devices. Hosting provider details are not explicitly identified in the data. Overall, the technical infrastructure is modern and well implemented with room for minor optimizations.
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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