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Security report for sierra.ai

Sierra · Technology · United States

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

81/100

Risk levelLow

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

Sierra is a technology company founded in 2017 that specializes in providing AI-powered conversational agents to enhance customer experiences for businesses. Their platform enables companies to deploy AI agents that are empathetic, personalized, and capable of handling complex customer interactions across multiple channels including voice. Sierra positions itself as a trusted partner to leading consumer brands, offering a scalable and customizable AI solution to improve customer engagement and operational efficiency. Technically, Sierra's website is built on modern web technologies including React and Next.js, hosted likely on Vercel, and uses Sanity as a CMS. The site is well-optimized for performance, mobile responsiveness, and accessibility, with rich multimedia content and structured data enhancing SEO. Security-wise, the site enforces HTTPS and uses Cloudflare DNS, but lacks DNSSEC and explicit security headers. Privacy compliance is weak due to missing privacy and cookie policies. The security posture is solid but could be improved by publishing clear security policies, incident response contacts, and vulnerability disclosure mechanisms. No critical vulnerabilities or suspicious content were detected. The domain WHOIS is privacy protected but consistent with a legitimate business, with domain age supporting the company's claimed history. Overall, Sierra presents a professional and trustworthy online presence with strong technical implementation and business credibility. Strategic improvements in privacy compliance and security transparency would enhance trust and regulatory alignment.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

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 X-Frame-Options header

      Prevents clickjacking attacks

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

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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 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 sierra.ai

This scan found 14 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

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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
65
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
81

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

Sierra operates in the AI technology sector, focusing on B2B SaaS solutions for customer experience enhancement. Their competitive advantage lies in delivering empathetic, brand-aligned AI agents capable of real-time problem solving and voice interactions. Revenue streams likely include subscription fees for platform access and customization services. Target customers are medium to large enterprises seeking to modernize customer support. The company showcases partnerships with well-known brands, indicating a strong market presence and growth potential. Their platform-centric approach allows scalability and integration with existing call center ecosystems, positioning them well in the conversational AI market.

Security posture

Sierra demonstrates a mature security posture with HTTPS enforcement, domain registration locks, and use of reputable DNS providers. However, the absence of DNSSEC and security headers like CSP and X-Frame-Options suggests room for enhancement. No explicit security or incident response policies are published, which may impact customer confidence and compliance with regulations such as GDPR and NIS2. Data protection practices mention encryption and masking of PII, but lack public documentation. Incident response readiness and security culture indicators are not visible on the site. Overall, the security maturity is good but would benefit from increased transparency and formalized policies.

Recommendations

  1. Enable DNSSEC to protect against DNS spoofing and enhance domain security.
  2. Publish comprehensive privacy and cookie policies including GDPR compliance details and consent mechanisms.
  3. Add a dedicated security policy page outlining frameworks, certifications, and incident response procedures.
  4. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  5. Establish a vulnerability disclosure program and publish a security.txt file to facilitate responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sierra
Description
Sierra helps businesses build better, more human customer experiences with AI.
Key services
Conversational AI agents, AI-powered customer support, Voice communication AI, AI agent customization platform
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS, Sanity CMS, Video streaming, Sentry (error tracking)
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Domain status includes clientDeleteProhibited and other EPP locks
  • Use of Cloudflare DNS

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 fully accessible with rich content and multimedia
  2. Strong branding and professional design
  3. No explicit privacy or cookie policies found
  4. No contact emails or phone numbers explicitly listed
  5. No security or incident response policies published
  6. Use of modern web technologies and frameworks
  7. Good SEO and accessibility practices
  8. No suspicious or malicious content detected
Technical notes

Notes

The website leverages a modern tech stack with React and Next.js, ensuring fast and responsive user experience. Hosting on Vercel and use of Sanity CMS provide scalability and content management efficiency. Multimedia content is well integrated with video streaming capabilities. SEO is supported by structured data and meta tags. Accessibility features are present but could be further audited for compliance. No deprecated or vulnerable libraries were detected in the scripts. Performance is optimized with preloading and asynchronous script loading. Technical risks are minimal, but continuous monitoring and updates are recommended to maintain security and performance.
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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