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Security report for square.site

Square, Inc. · Finance · United States

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

Security score

80/100

Risk levelLow

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

Square, Inc. is a leading fintech company specializing in payment processing, point of sale systems, and financial services tailored for small to medium-sized businesses. With a strong market position and enterprise scale, Square offers a comprehensive suite of services including online payments and financial management tools. The company operates under the parent company Block, Inc., with notable subsidiaries such as Afterpay and Weebly. The website reflects a professional and consistent brand image, targeting merchants and retailers primarily in the United States.

Scanned

This is an earlier scan of square.site. View the latest report

NIS2 and GDPR posture

GDPR outside view
88/ 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 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
    • 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 square.site

This scan found 16 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

Email alerts on material changes and an exportable JSON history of every change.

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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
57
Security headers
65
Email security
85
DNS health
85
Network security
100
GDPR outside view
88
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

Square's business model revolves around providing integrated payment and financial solutions to a broad customer base including retailers, restaurants, and online merchants. The company leverages its technology platform to generate revenue through transaction fees and value-added services. Its competitive advantage lies in its seamless integration of hardware and software, strong security certifications, and a growing ecosystem of subsidiaries. Strategic partnerships and acquisitions like Afterpay enhance its market reach and service offerings.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and adherence to industry standards such as PCI DSS and ISO 27001. Incident response contacts are clearly provided, and security policies are transparent. No critical vulnerabilities or exposed sensitive data were detected. However, enabling DNSSEC and publishing a security.txt file could further strengthen the security framework. Overall, Square maintains robust data protection and incident management practices aligned with regulatory requirements.

Recommendations

  1. Enable DNSSEC to enhance DNS security and prevent spoofing.
  2. Publish a security.txt file to facilitate responsible vulnerability disclosure.
  3. Add explicit Data Protection Officer contact information to improve GDPR transparency.
  4. Regularly review and update third-party libraries to avoid vulnerabilities.
  5. Enhance advertising transparency by disclosing all tracking and marketing tools.

Contact details published on the site

Addresses
Legal name
Square, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Square, Inc.
Description
Square provides payment processing solutions, point of sale systems, and financial services for businesses of all sizes.
Key services
Point of Sale systems, Payment processing, Online payments, Financial services
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, React, AWS, Sentry, YouTube API
Frameworks
React
Platforms
AWS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data detected
  • Secure forms with CSRF protection
  • Use of Sentry for error monitoring

Analytics and tracking

Services
Sentry
Tracking level
moderate
Privacy practices
good

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 fully accessible with no blocking or WAF challenges.
  2. Comprehensive legal and security policies are published and easily accessible.
  3. Strong security posture with HTTPS and security headers.
  4. Modern technology stack and good performance metrics.
  5. Clear business information and contact details provided.
  6. No suspicious or malicious indicators found.
Technical notes

Notes

Square's website is built on a modern technology stack including React and AWS hosting, ensuring fast performance and scalability. The site is mobile-optimized with good accessibility features and SEO practices. Use of monitoring tools like Sentry indicates proactive error tracking. The custom CMS and hosting on AWS provide flexibility and reliability. Opportunities exist to further optimize DNS security and formalize vulnerability disclosure processes. The technical infrastructure supports the company's enterprise-level operations effectively.
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. 80/100Low24 findingsView report
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