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Security report for notion.so

Notion Labs, Inc. · Technology · N/a

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

75/100

Risk levelMedium

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

Notion Labs, Inc. operates a leading AI-powered productivity and collaboration platform designed to unify everyday work into a flexible workspace. The platform targets teams and individuals seeking integrated tools for note-taking, project management, documentation, and AI-assisted writing and search. Notion holds a strong market position as a versatile SaaS solution with a broad feature set including AI Meeting Notes, Enterprise Search, and customizable templates. Technically, the website leverages modern web technologies such as React and Next.js, ensuring fast performance, mobile responsiveness, and good accessibility. The infrastructure appears robust with secure HTTPS implementation and comprehensive security headers, reflecting a mature digital presence. From a security perspective, Notion demonstrates strong best practices including HTTPS enforcement, security headers, and no visible vulnerabilities or exposed sensitive data. However, explicit security policies, incident response contacts, and vulnerability disclosure mechanisms are not publicly evident, representing areas for improvement. Overall, the website and business exhibit high professionalism and trustworthiness, supported by strong branding and partnerships. The absence of WHOIS data is likely due to privacy protection and does not detract from the legitimacy of the business. Strategic recommendations include enhancing transparency around security policies and incident response to further strengthen trust and compliance.

Scanned

This is an earlier scan of notion.so. View the latest report

NIS2 and GDPR posture

GDPR outside view
70/ 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

4 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"

  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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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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
75
Security headers
55
Email security
65
DNS health
85
Network security
100
GDPR outside view
70
Average
75

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

Notion operates in the technology sector as a SaaS provider offering an all-in-one workspace with AI integration. Its business model is subscription-based, targeting enterprises and individual users seeking productivity solutions. The company benefits from a strong ecosystem of partners and integrations, including notable brands like Toyota, OpenAI, and Figma. Notion's competitive advantage lies in its flexible platform combining note-taking, project management, and AI capabilities. Growth indicators include continuous feature expansion and new product launches such as AI Meeting Notes and Enterprise Search. The company maintains a large user base and a consistent brand presence, positioning it as a market leader in productivity software.

Security posture

Notion's security posture is strong with enforced HTTPS, comprehensive security headers, and no detected vulnerabilities or exposed sensitive information. The website lacks explicit public-facing security policies or incident response contacts, which are important for transparency and trust. There is no visible security.txt or vulnerability disclosure program, which could be improved to encourage responsible reporting. GDPR compliance is indicated through privacy and cookie policies with consent mechanisms. Overall, the security maturity is high but could benefit from enhanced communication of security governance and incident handling procedures.

Recommendations

  1. Publish a dedicated security policy page detailing security practices and controls.
  2. Establish and publicize a vulnerability disclosure program or security.txt file.
  3. Provide clear security incident response contact information on the website.
  4. Regularly review and audit third-party scripts and dependencies for vulnerabilities.
  5. Enhance transparency around certifications and compliance frameworks to build trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Notion Labs, Inc.
Description
A tool that connects everyday work into one space. It gives you and your teams AI tools—search, writing, note-taking—inside an all-in-one, flexible workspace.
Key services
Notion AI, Docs, Wikis, Projects, Enterprise Search, AI Meeting Notes, Forms, Sites, Mail, Calendar
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, CSS, HTML5
Frameworks
React, Next.js
Platforms
Web, Desktop app
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data detected
  • Secure forms with no visible vulnerabilities

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

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 rich content and professional design.
  2. No WAF or security challenge detected.
  3. WHOIS data is unavailable, indicating privacy protection or registry restrictions.
  4. Comprehensive privacy and cookie policies present with consent mechanisms.
  5. No explicit contact emails or phone numbers found on the main page.
  6. Use of modern web technologies and frameworks.
  7. Strong branding and trust indicators from partnerships and client logos.
  8. Security headers and HTTPS are properly implemented.
  9. No visible security vulnerabilities or exposed sensitive data.
Technical notes

Notes

The website is built on a modern tech stack including React and Next.js, enabling server-side rendering and optimized performance. The site is mobile-optimized with responsive design and accessibility considerations. Meta tags and Open Graph data are well implemented for SEO and social sharing. The use of preloading and prefetching resources indicates attention to performance. No CMS is explicitly detected, suggesting a custom or headless approach. Hosting provider details are not evident from the data. Overall, the technical infrastructure supports a fast, reliable, and user-friendly experience with opportunities to improve documentation of backend and hosting details.
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

Earlier scans of this domain

  1. 77/100 +4Low26 findingsView report
  2. 73/100 −4Medium28 findingsView report
  3. 77/100Low26 findingsView report
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