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Security report for kahoot.it

Kahoot! · Education · N/a

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

79/100

Risk levelLow

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

Kahoot! operates as a leading interactive learning platform that enables users to join and create quizzes through a game PIN system. The website is designed to facilitate engaging educational experiences for a broad audience, including classrooms and social learning environments. The platform's market position is strong within the education sector, supported by a mature domain and consistent branding. Technically, the site leverages modern JavaScript frameworks, analytics tools like Amplitude and Google Tag Manager, and employs best practices such as HTTPS and DNSSEC for security. The website is well-optimized for mobile and accessibility, providing a good user experience. Security posture is solid with encrypted connections and script integrity checks, though explicit security policies and incident response contacts are not published. Privacy compliance is well addressed with clear links to privacy, cookie, and terms pages, indicating GDPR awareness. Overall, the site is trustworthy, professional, and safe for general audiences.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

3 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. 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 kahoot.it

This scan found 17 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
82
Security headers
55
Email security
85
DNS health
70
Network security
100
GDPR outside view
83
Average
79

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

Kahoot! targets the education sector with a platform that supports interactive quizzes and gamified learning. Its business model revolves around providing free and premium services for quiz creation and participation, appealing to educators, students, and social users. The company has established itself as a market leader since its founding in 2012, with a large user base and consistent branding. The platform integrates analytics and marketing tools to optimize user engagement and growth. While no direct contact information or security certifications are published on the analyzed page, the domain age and DNSSEC usage support legitimacy. The company likely operates at a large scale given the technical sophistication and global reach implied by the content and infrastructure.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and DNSSEC enabled, reducing risks of interception and DNS spoofing. Use of script integrity attributes and crossorigin settings further enhance security. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure programs represents a gap in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the analyzed content. The site uses modern analytics and tracking tools responsibly with privacy compliance evident. Overall, the security posture is good but could be improved by publishing formal security documentation and contact channels for incident reporting.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and frameworks used.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Add security headers like Content-Security-Policy and X-Frame-Options to enhance protection against common web attacks.
  5. Maintain transparency on data retention policies and enhance user privacy controls to strengthen GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Kahoot!
Description
Join a game of kahoot – answer questions in an interactive quiz, compete with others, and experience awesome learning.
Key services
Interactive quizzes, Game PIN entry for live games, User-generated kahoot creation
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Amplitude Analytics, Google Tag Manager, PixiJS
Platforms
Web
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • DNSSEC enabled
  • Use of integrity and crossorigin attributes on scripts

Analytics and tracking

Services
Amplitude, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Amplitude
Marketing tools
Amplitude Analytics
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges
  2. Strong use of modern JavaScript frameworks and analytics tools
  3. Clear privacy, cookie, and terms of service links present
  4. No direct contact emails or phone numbers found on the page
  5. No explicit security policy or incident response information published
  6. No vulnerability disclosure or security.txt found
  7. Content is focused on education and interactive quizzes
  8. Good mobile and accessibility support indicated by meta tags and structure
Technical notes

Notes

The website is built using modern JavaScript frameworks, likely React, with modular scripts and advanced graphics libraries such as PixiJS. It integrates analytics platforms like Amplitude and Google Tag Manager for user behavior tracking and marketing optimization. The site is well-structured with proper meta tags, responsive design, and accessibility considerations. Performance is fast with preconnect and module preload optimizations. No CMS or hosting provider details are explicitly detected. The technical implementation reflects a mature and well-maintained infrastructure suitable for a large-scale interactive platform.
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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