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Security report for introversion.co.uk

Introversion Software Ltd · Technology · United Kingdom

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

60/100

Risk levelMedium

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

Introversion Software Ltd is a well-established independent game developer and publisher based in the United Kingdom, founded in 2001. The company has a strong reputation in the indie gaming community, known for critically acclaimed titles such as Prison Architect, Uplink, DEFCON, Darwinia, Multiwinia, and Scanner Sombre. Their business model focuses on direct sales through major digital distribution platforms like Steam, GOG, and Humble Store, targeting gamers on PC, Mac, and Linux platforms. The website reflects a professional and consistent brand image with clear navigation and relevant content about their games and company history. Technically, the website employs a modern tech stack including HTML5, CSS3, JavaScript, jQuery, and integrates third-party services such as Google Analytics, Google Tag Manager, YouTube iframe API, and Twitter widgets. The site is hosted with a reputable registrar (Gandi) and uses CDN resources for performance. Mobile optimization is good, though accessibility features are basic. SEO optimization is present but could be improved. From a security perspective, the site uses HTTPS and asynchronous loading of analytics scripts, but lacks explicit security headers and a published privacy or cookie policy, which are important for compliance and user trust. No vulnerabilities or exposed sensitive data were detected. Contact information is limited to email addresses, with no phone numbers or physical addresses provided. The WHOIS data confirms domain legitimacy and consistency with the company’s history. Overall, the website is trustworthy and professional but would benefit from enhanced privacy compliance measures, improved security headers, and more comprehensive contact information to strengthen user trust and regulatory adherence.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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. 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"

    • 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

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

Keep watching introversion.co.uk

This scan found 27 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
67
Security headers
15
Email security
75
DNS health
65
Network security
100
GDPR outside view
35
Average
60

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

Introversion Software holds a niche but respected position in the indie game development sector, leveraging a portfolio of cult classic games with strong critical and commercial success. Their revenue streams primarily come from digital sales on multiple platforms, supported by direct customer engagement via forums and social media. The company maintains a small team with clear roles in creative, technical, business development, and legal functions. Partnerships with major digital storefronts and a strong social media presence support their market reach. The acquisition of Prison Architect by Paradox Interactive indicates strategic business evolution, allowing focus on new projects. The company’s operations reflect a lean, focused indie developer with a loyal customer base and steady growth potential.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and no visible exposure of sensitive data. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security reduces the overall security posture. There is no published security policy, incident response contact, or vulnerability disclosure program, which are important for transparency and readiness. The use of third-party analytics and social media scripts introduces moderate tracking but without explicit user consent mechanisms, raising privacy compliance concerns. Overall, the site is secure for general browsing but lacks advanced security and compliance features expected for modern websites.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with clear GDPR compliance statements.
  2. Implement security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  3. Establish and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Add incident response contact information such as a dedicated security or abuse email address.
  5. Improve accessibility features to meet modern standards and enhance user experience for all visitors.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Introversion Software Ltd
Description
Introversion Software is one of the UK's most-respected and successful independent game developers and publishers. Founded in 2001 by three university students, they have created six critically acclaimed video games including Prison Architect, Uplink, DEFCON, Darwinia, Multiwinia and Scanner Sombre.
Key services
Game development, Game publishing, Customer support
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, jQuery, Google Analytics, Google Tag Manager, YouTube iframe API, Twitter widgets, SendOwl (for e-commerce)
Platforms
PC, Mac, Linux, Steam, GOG, Humble Store
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by YouTube iframe origin and Google Analytics scripts)
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager and analytics scripts asynchronously

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
AddThis
Marketing tools
AddThis social sharing
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is professionally designed with clear navigation and good content about the company and its games.
  2. No explicit privacy or cookie policies found, which is a compliance gap.
  3. Contact information is limited to email addresses; no phone numbers or physical addresses found.
  4. Use of multiple external scripts and analytics tools without explicit user consent mechanisms.
  5. No visible security headers in HTML content; potential area for improvement.
  6. Social media presence is strong with links to multiple platforms.
  7. WHOIS data supports legitimacy and long-standing domain ownership.
Technical notes

Notes

The website uses a solid and modern technology stack with HTML5, CSS3, JavaScript, and jQuery. Integration with Google Analytics, Google Tag Manager, YouTube iframe API, and Twitter widgets indicates a mature digital marketing and analytics approach. The site is hosted with a reputable registrar and uses CDN resources for static content delivery. Performance is moderate with responsive design for mobile devices. However, there is room for improvement in SEO optimization and accessibility compliance. The site does not appear to use a CMS, suggesting a custom-built or static site approach. Technical debt appears low, but adding security headers and privacy compliance features would modernize the infrastructure 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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