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Security report for linear.app

Linear · Technology · Finland

Medium risk. 4 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

60/100

Risk levelMedium

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

Linear is a technology company providing a modern SaaS platform designed to streamline issue tracking, project management, and product roadmaps for software development teams. The website presents a professional and polished interface targeting modern product developers and software teams, positioning itself as a purpose-built tool for efficient product planning and building. The company appears to be based in Finland, aligning with the detected country code and WHOIS data. Technically, the website leverages modern web technologies including React and Next.js, hosted likely behind Cloudflare infrastructure, ensuring fast performance and mobile optimization. The presence of Sentry indicates active error monitoring and a mature technical infrastructure. The website is well-optimized for SEO and accessibility, with comprehensive meta tags and Open Graph data. From a security perspective, the site enforces HTTPS and includes standard security headers, reflecting good security hygiene. However, the absence of publicly accessible privacy, cookie, and terms of service policies, as well as lack of explicit contact information and incident response details, indicates gaps in compliance and transparency. No vulnerabilities or suspicious content were detected. Overall, Linear's website is trustworthy and professional but would benefit from enhanced privacy compliance and clearer security policy disclosures to improve user trust and regulatory adherence.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. 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"

  3. 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

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

Keep watching linear.app

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.

Daily monitoring

Recommended

€25per month

  • 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
0
Security headers
40
Email security
72
DNS health
85
Network security
100
GDPR outside view
65
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

Linear operates in the competitive SaaS market for product management tools, focusing on modern software development teams. Its streamlined approach and emphasis on product intelligence position it well against legacy issue trackers. The business model is subscription-based SaaS, targeting medium to large development teams. The company maintains a consistent brand and regularly updates its product, as evidenced by changelog links. The lack of visible parent or subsidiary companies suggests an independent operation. The website's technical sophistication and use of modern frameworks indicate a forward-looking digital strategy. The presence of social media, particularly Twitter, supports community engagement and marketing efforts.

Security posture

The website demonstrates a solid security foundation with HTTPS, security headers, and error monitoring via Sentry. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of published security policies, incident response contacts, and vulnerability disclosure mechanisms limits transparency and user confidence in security practices. GDPR compliance indicators are weak due to missing privacy and cookie policies. The site should implement explicit consent mechanisms and publish security-related documentation to enhance compliance and trust. Overall, the security posture is good technically but lacks policy transparency.

Recommendations

  1. Publish comprehensive privacy and cookie policies prominently linked in the website footer.
  2. Implement a cookie consent banner to comply with GDPR and other privacy regulations.
  3. Provide clear contact information for security incidents, including dedicated security or abuse email addresses.
  4. Establish and disclose a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are included.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Linear
Description
Linear streamlines issues, projects, and roadmaps. Purpose-built for modern product development.
Key services
issue tracking, project management, product roadmaps
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, CSS, Sentry
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Use of Sentry for error monitoring

Analytics and tracking

Services
Sentry
Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Sentry
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured for a SaaS product.
  2. No explicit privacy, cookie, or terms of service policies found in the provided content.
  3. No direct contact emails or phone numbers found in the HTML content.
  4. Use of modern web technologies and frameworks indicates technical maturity.
  5. Security posture is strong with HTTPS and security headers but lacks published security policies.
  6. No signs of suspicious or malicious content detected.
  7. Content is safe for general audiences with no adult or questionable material.
Technical notes

Notes

The website is built using Next.js and React, indicating a modern, server-side rendered React application. It uses Cloudflare for CDN and image delivery, enhancing performance and security. The site includes multiple CSS and JavaScript chunks for modular loading, improving load times. Accessibility features such as aria-labels and skip navigation links are present, supporting usability. SEO is well addressed with meta tags, Open Graph, and Twitter card data. The site is mobile optimized with responsive design elements. No CMS was detected, suggesting a custom or headless CMS approach. Overall, the technical implementation is robust, performant, and modern, supporting a high-quality user experience.
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. 75/100 +17Medium26 findingsView report
  2. 58/100Medium24 findingsView report
  3. 58/100Medium24 findingsView report
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