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Security report for prolog.work

Prolog AG · Technology · Switzerland

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

Prolog AG is a Basel-based digital agency specializing in sustainable web solutions that integrate strategy, design, and technology to deliver lasting digital success. The company serves a diverse clientele, including cultural institutions, startups, and established organizations, offering services ranging from UX/UI design and development to digital strategy and e-commerce solutions. The website reflects a mature digital presence with a professional portfolio showcasing recent projects and collaborations. Technically, the site is built on modern frameworks like Nuxt.js and employs best practices such as responsive design and lazy loading for media assets. Security posture is solid with HTTPS enforced and domain transfer protections, though improvements can be made by enabling DNSSEC and adding security headers. Privacy compliance is partial, with a privacy policy present but lacking explicit GDPR compliance statements and no cookie consent mechanism. Overall, the website and domain registration data indicate a trustworthy and credible business with a strong market position in the Swiss digital agency sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

6 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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 Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  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 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

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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
52
Security headers
30
Email security
85
DNS health
70
Network security
100
GDPR outside view
53
Average
65

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

Prolog AG operates as a specialized digital agency focusing on technology-driven design and development services. Their market positioning is strong within the Basel region, supported by a portfolio of reputable clients and projects in sectors such as culture, non-profit, and commerce. The business model centers on consulting, UX/UI design, and full-stack development, targeting organizations seeking innovative digital transformation. The company demonstrates growth through diverse project engagements and partnerships with other creative and strategic firms. Their transparent contact information and active social media presence enhance client trust and engagement. The absence of privacy and security policies suggests an opportunity to strengthen compliance and risk management frameworks.

Security posture

The website benefits from HTTPS encryption and domain transfer protection, indicating a baseline secure environment. However, the lack of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options represents potential areas for enhancement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The absence of a published security policy or incident response contact limits transparency in handling security incidents. Privacy compliance is incomplete, with no cookie consent mechanism and limited GDPR-related disclosures. Overall, the security posture is good but could be improved by adopting additional security controls and formalizing privacy and incident response documentation.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  2. Implement standard security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to mitigate common web vulnerabilities.
  3. Add a cookie consent banner or mechanism to comply with EU and Swiss privacy regulations.
  4. Publish a comprehensive privacy policy with explicit GDPR compliance statements and data retention details.
  5. Develop and publish a security policy and incident response contact information to enhance transparency and preparedness.

Contact details published on the site

Addresses
Legal name
Prolog AG
VAT number
CHE-392.280.085
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Prolog AG
Description
Prolog ist eine Digitalagentur für zukunftsfähige Web-Lösungen. Sie verbinden Strategie, Design und Technologie für nachhaltigen digitalen Erfolg.
Key services
Beratung, Research, Ideation, User Journey, Innovationsworkshops, SEO Optimierung, Projekt Management, UX/UI Design, Informationsarchitektur, Service Design
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Vue.js (Nuxt.js framework), Google Tag Manager, Lazy loading for images and videos, Responsive web design, Web fonts (Alpina, Zirkon)
Frameworks
Nuxt.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • No exposed sensitive data in HTML
  • Use of lazy loading to optimize performance

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

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 challenges.
  2. Content is in German with an English language switch available.
  3. Strong focus on digital agency services with detailed project portfolio.
  4. Contact information is prominently displayed in header and footer.
  5. No explicit privacy or cookie consent banners detected.
  6. Use of modern web technologies and good SEO practices.
  7. No visible security policy or incident response information.
  8. WHOIS data is transparent and consistent with business claims.
Technical notes

Notes

The website is built using the Nuxt.js framework, leveraging Vue.js for a performant and responsive user experience. It uses modern web fonts and lazy loading techniques for images and videos, optimizing load times and mobile performance. Hosting appears to utilize AWS S3 for media assets, indicating scalable infrastructure. SEO is supported by comprehensive meta tags, Open Graph data, and structured JSON-LD schema for organization details. The site is mobile-optimized with clear navigation and professional design. No CMS is detected, suggesting a custom or static site generation approach. Performance is fast with no broken elements observed. Technical risks are minimal but could be mitigated further by adding security headers and improving privacy compliance mechanisms.
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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