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Security report for capitalone.com

Capital One · Finance · United States

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

74/100

Risk levelMedium

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

Capital One is a leading diversified bank headquartered in the United States, offering a wide range of financial products including credit cards, checking and savings accounts, and auto loans. The company targets both consumers and businesses, maintaining a strong market position as one of the largest banks in the US with a significant digital presence. The website reflects this stature with professional design, comprehensive content, and clear navigation tailored to its audience. Technically, the site employs modern web technologies such as Angular, New Relic monitoring, Adobe Target, and Google Tag Manager, ensuring robust performance and user experience across devices. Security is a priority, with HTTPS enforced, strong security headers, and adherence to recognized frameworks like ISO 27001 and NIST. Privacy compliance is well addressed with clear policies and consent mechanisms. Overall, the site demonstrates a mature digital infrastructure aligned with the company's business goals and regulatory requirements.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

5 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. 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 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 capitalone.com

This scan found 18 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
62
Security headers
55
Email security
82
DNS health
90
Network security
100
GDPR outside view
53
Average
74

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

Capital One operates primarily in the finance sector, focusing on retail and commercial banking services. Its business model revolves around providing credit products and banking services to a broad customer base in the US. The company benefits from a strong brand, extensive service offerings, and a well-established partnership ecosystem. The website's content and linked domains indicate a sophisticated marketing and analytics setup, leveraging multiple tools for user tracking and engagement. Capital One's compliance with security standards and certifications like PCI DSS further enhances its competitive advantage. The presence of dedicated security and incident response contacts reflects a mature operational posture. Growth indicators include digital innovation and comprehensive customer support infrastructure.

Security posture

The website exhibits a strong security posture with enforced HTTPS, comprehensive security headers, and integration of security monitoring tools such as New Relic. The presence of a detailed security policy, incident response contacts, and vulnerability disclosure program indicates proactive risk management. No obvious vulnerabilities or exposed sensitive data were detected in the analysis. The site follows best practices including secure cookie flags and content security policies. However, continuous vigilance is recommended to maintain this posture, including regular updates of third-party libraries and penetration testing. The security score reflects a high level of maturity appropriate for a major financial institution.

Recommendations

  1. Maintain regular updates and patching of all third-party libraries and frameworks to mitigate emerging vulnerabilities.
  2. Enhance user education and awareness programs to reduce phishing and social engineering risks.
  3. Implement and regularly test comprehensive incident response plans to ensure rapid mitigation of security events.
  4. Expand transparency around data retention policies and user privacy controls to strengthen compliance and trust.
  5. Invest in continuous security monitoring and automated threat detection to proactively identify and address risks.

Contact details published on the site

Addresses
Legal name
Capital One Financial Corporation
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Capital One
Description
Capital One is a diversified bank that offers a broad array of financial products and services to consumers, small businesses, and commercial clients.
Key services
Credit Cards, Checking Accounts, Savings Accounts, Auto Loans
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, New Relic Browser Monitoring, Google Tag Manager, Adobe Target, Cloudfront CDN, OneTag tracking
Frameworks
Angular (indicated by _ngcontent attributes)
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy
  • Use of security monitoring tools (New Relic)
  • Secure cookie flags (SameSite=None; Secure)

Analytics and tracking

Services
New Relic, Google Analytics (via GTM)
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Ads, DoubleClick
Tracking pixels
New Relic, Adobe Target
Marketing tools
Adobe Target, OneTag
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.
  2. Strong use of modern web technologies and monitoring tools.
  3. Comprehensive privacy and security policies are present.
  4. No signs of malicious or suspicious activity.
  5. Professional design and user experience consistent with a major financial institution.
Technical notes

Notes

The website is built on a modern technology stack including Angular for frontend framework, Amazon Cloudfront for CDN, and integrates advanced monitoring and analytics tools such as New Relic and Google Tag Manager. Performance optimizations are evident with preconnect and dns-prefetch hints, font preloading, and asynchronous script loading. The site is mobile optimized with responsive design and accessibility features. SEO is supported by comprehensive meta tags and Open Graph data. The technical infrastructure supports a fast, reliable, and secure user experience suitable for a large enterprise financial services provider.
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. 73/100Medium27 findingsView report
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