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Security report for character.ai

Character Technologies, Inc. · Technology · United States

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

75/100

Risk levelMedium

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

Character.AI is a technology company specializing in AI-driven interactive chat experiences, offering millions of AI characters for users to engage with. Founded in 2018 and headquartered in the US, it has established itself as a leading platform in AI chat entertainment with a strong user base and subscription-based premium features. The company emphasizes user safety, privacy, and parental controls, reflecting a mature approach to content moderation and user protection. Technically, the website leverages modern frameworks such as Next.js and React, hosted with Cloudflare DNS services, ensuring fast performance and mobile optimization. Security posture is strong with HTTPS enforcement and standard security headers, though DNSSEC is not enabled. Privacy compliance is robust with clear policies and consent mechanisms. Overall, the platform demonstrates high professionalism, trustworthiness, and technical maturity.

Scanned

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

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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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 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 character.ai

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

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
75
Security headers
15
Email security
85
DNS health
85
Network security
100
GDPR outside view
88
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

Character.AI operates in the technology sector focusing on AI chat and interactive entertainment. Its business model revolves around providing free access to AI characters with optional subscription upgrades for enhanced features. The company targets a broad audience interested in AI-driven storytelling and social interaction. It maintains a consistent brand presence and offers extensive user engagement tools including character creation and voice chat. Partnerships and integrations with analytics and CDN providers support its operations. The company maintains a clear media contact and safety center, reinforcing its commitment to compliance and user trust.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented. The domain is registered with privacy protection, which is justified for this business type. No critical vulnerabilities or exposed sensitive data were detected. Content moderation and safety features are integrated into the platform. However, the absence of DNSSEC and a public vulnerability disclosure policy are areas for improvement. Incident response contact details are not explicitly provided, which could enhance transparency and trust. Overall, the security measures align well with industry standards for consumer-facing AI platforms.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish a dedicated vulnerability disclosure or security.txt page to facilitate responsible reporting.
  3. Provide explicit incident response contact information to improve transparency and user trust.
  4. Regularly review and update content moderation tools to maintain safety and compliance.
  5. Continue investing in privacy compliance measures, especially with evolving regulations like GDPR and NIS2.

Contact details published on the site

Addresses
Legal name
Character Technologies, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Character Technologies, Inc.
Description
Character.AI empowers people to connect, learn, and tell stories through interactive entertainment. Millions of people visit Character.AI every month, using their technology to supercharge imaginations.
Key services
AI chat with millions of characters, Character creation and customization, Voice-enabled chat, Interactive storytelling and gaming
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Toastify, Cloudflare DNS, Google Tag Manager
Frameworks
Next.js
Platforms
Web, iOS, Android
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Domain status includes clientDeleteProhibited and other EPP locks
  • No DNSSEC enabled (recommend enabling)
  • Use of Cloudflare DNS for protection and performance
  • Content moderation and safety center present

Analytics and tracking

Services
Google Tag Manager
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 no blocking or WAF challenge.
  2. Comprehensive privacy, cookie, and terms policies are present and linked.
  3. Safety and parental controls are emphasized, indicating focus on user protection.
  4. Modern tech stack with Next.js and React used for frontend.
  5. Use of Cloudflare DNS and Google Tag Manager for performance and analytics.
  6. No exposed sensitive data or obvious vulnerabilities detected in content.
  7. No explicit incident response or vulnerability disclosure page found.
  8. Business information is clear with media contact email provided.
  9. No phone numbers or physical addresses explicitly listed on main pages.
  10. Content is safe for general audiences with no adult or NSFW content.
Technical notes

Notes

The website is built on a modern technology stack including React and Next.js, ensuring server-side rendering and fast client-side interactions. Hosting and DNS are managed via Cloudflare, providing performance and security benefits. The site is well-optimized for mobile devices and accessibility, with comprehensive meta tags for SEO. Google Tag Manager is used for analytics and marketing tracking. No CMS was detected, indicating a custom or framework-based solution. Performance is fast with preloading and prefetching of resources. The technical implementation supports scalability and 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

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