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Security report for polar.sh

Polar · Technology · Iceland

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

80/100

Risk levelLow

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

Polar is a technology startup founded in 2022, providing modern payment infrastructure tailored for SaaS and digital product companies. Positioned as a developer-friendly platform, it offers key services such as usage-based billing, global merchant of record capabilities, and customer management. The company emphasizes open-source components and seamless integration with popular frameworks like Next.js, targeting developers and SaaS businesses worldwide. The recent $10M seed funding led by Accel underscores its growth potential and market validation. Technically, the website leverages modern web technologies including Next.js, React, and Stripe.js, hosted likely on Vercel with Cloudflare DNS, ensuring fast performance and good mobile optimization. Security posture is solid with HTTPS and domain transfer protections, though improvements are needed in security headers and published policies. Overall, Polar demonstrates a strong business and technical foundation with room to enhance privacy compliance and security transparency.

Scanned

This is an earlier scan of polar.sh. View the latest report

NIS2 and GDPR posture

GDPR outside view
68/ 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

2 findings rated critical or high. Fix these first.

  1. 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

  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 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

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

Keep watching polar.sh

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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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
75
Security headers
70
Email security
85
DNS health
80
Network security
100
GDPR outside view
68
Average
80

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

Polar operates in the competitive payment infrastructure sector, focusing on SaaS and digital product monetization. Its open-source approach and developer-centric APIs differentiate it from traditional payment processors. The platform's global merchant of record service simplifies tax compliance, a critical pain point for international SaaS vendors. Testimonials from industry leaders and integration with Stripe enhance credibility. The business model likely includes transaction fees and subscription plans. The company targets developers and SaaS companies seeking flexible, usage-based billing solutions. The recent seed round and active community engagement indicate growth momentum. Strategic partnerships with platforms like Vercel and GitHub repositories support ecosystem expansion. However, the lack of visible contact and compliance documentation may hinder trust for some enterprise clients.

Security posture

Polar's website enforces HTTPS and uses clientTransferProhibited status to protect domain transfers, reflecting good baseline security. The integration of Stripe.js for payments adds a layer of secure payment processing. However, the absence of key security headers (e.g., CSP, HSTS) and lack of published security policies or incident response procedures represent gaps in security maturity. No vulnerabilities or exposed sensitive data were detected in the content. The use of privacy protection in WHOIS is justified for a startup but limits transparency. Overall, the security posture is moderate, suitable for a startup but requiring enhancements to meet enterprise-grade standards and compliance frameworks such as GDPR or ISO 27001.

Recommendations

  1. Enable DNSSEC to improve domain security and prevent DNS spoofing.
  2. Implement and publish comprehensive privacy and cookie policies with user consent mechanisms to enhance GDPR compliance.
  3. Add security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options to harden the website against common attacks.
  4. Publish a security policy and incident response plan, including contact channels for security issues (e.g., security@ or abuse@ emails).
  5. Provide clear contact information and business registration details to improve trust and business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Polar
Description
Payment infrastructure for the 21st century. The modern way to sell your SaaS and digital products.
Key services
Usage Based Billing, Digital Products & SaaS Billing, Benefits Engine, Customer Management, Global Merchant of Record
Content quality
good
Branding
consistent

Technology

Stack
Next.js, React, Stripe.js, Cloudflare DNS, TypeScript, Emotion CSS
Frameworks
Next.js
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of Stripe.js for payments

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is a modern SaaS payment infrastructure platform with developer focus.
  2. Strong emphasis on usage-based billing and global tax compliance.
  3. Open source and API-first approach highlighted.
  4. No explicit privacy, cookie, or terms of service pages found in main content.
  5. No direct contact emails or phone numbers visible on landing page.
  6. Multiple testimonials from recognized industry figures increase trust.
  7. Use of modern web technologies and frameworks.
  8. No signs of malicious or suspicious content.
Technical notes

Notes

The website is built on a modern technology stack featuring Next.js and React, ensuring a performant and responsive user experience. Integration with Stripe.js facilitates secure payment processing. The site is hosted with Cloudflare DNS and likely Vercel, contributing to fast load times and good mobile optimization. The use of Emotion CSS and modular JavaScript chunks indicates a well-structured frontend architecture. SEO is supported by comprehensive meta tags and Open Graph data. However, accessibility features appear basic and could be improved. The absence of a CMS suggests a custom or static site approach, which aligns with the developer-focused audience. Overall, the technical implementation is robust with minor areas for enhancement in accessibility and security.
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. 79/100Low28 findingsView report
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