Skip to main content

Security report for langchain.com

LangChain · Technology · N/a

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

71/100

Risk levelMedium

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

LangChain is a technology company specializing in AI agent development frameworks and platforms. Their product suite supports developers through the entire lifecycle of building reliable AI agents and LLM applications, including orchestration, integration, evaluation, and deployment. The company has established a strong market position with a large developer community and significant GitHub presence. Technically, the website is built on modern web technologies, including Webflow CMS, JavaScript frameworks, and cloud video hosting, delivering fast performance and excellent mobile optimization. Security posture is good with HTTPS and secure forms, though some security headers and explicit incident response policies are missing. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms. Overall, LangChain presents a professional and trustworthy digital presence, though the lack of WHOIS data transparency is a minor concern.

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

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

  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

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

Keep watching langchain.com

This scan found 23 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.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
72
Security headers
45
Email security
65
DNS health
90
Network security
100
GDPR outside view
53
Average
71

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

LangChain operates in the AI technology sector, targeting developers and engineering teams building AI agents and LLM applications. Their business model revolves around offering a comprehensive suite of frameworks and platforms, with free and paid options, demos, and extensive documentation. The company has cultivated a strong ecosystem with partnerships and customer endorsements from startups to global enterprises. Growth indicators include a large active community, high GitHub stars, and multiple integrations. Strategic observations highlight LangChain's focus on developer enablement, product integration, and enterprise readiness.

Security posture

LangChain demonstrates a mature security posture with HTTPS enforcement, secure data collection forms, and cookie consent mechanisms. However, the absence of explicit security headers like Content Security Policy (CSP) and HSTS reduces the overall security hardening. No public security policy or incident response contacts were found, which could impact transparency and trust in security incident handling. No vulnerabilities or exposed sensitive data were detected in the website content. Compliance with GDPR is indicated by privacy policies and consent banners. Overall, the security maturity is good but could be improved with additional headers and published security policies.

Recommendations

  1. Implement and publish security headers such as CSP, HSTS, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish a dedicated security policy or security.txt file to provide transparency on security practices and incident response.
  3. Add explicit incident response contact channels (e.g., security@langchain.com) to facilitate vulnerability reporting and communication.
  4. Enhance data retention disclosures and privacy transparency to strengthen GDPR compliance.
  5. Consider publishing WHOIS registrant information or using verified domain registration to improve trust and legitimacy signals.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
LangChain
Description
LangChain provides a suite of products and frameworks designed to support developers in building reliable AI agents and LLM applications. Their offerings cover the entire agent development lifecycle, including orchestration, integrations, evaluation, observability, and deployment.
Key services
LangChain framework, LangGraph orchestration, LangSmith evaluation and observability, LangGraph Platform deployment
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Python, Webflow, Google Tag Manager, Plausible Analytics, Bugherd, Cloudflare Stream (video hosting), Swiper JS
Frameworks
LangChain, LangGraph, LangSmith
Platforms
LangGraph Platform
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent banner for cookies
  • Secure forms with validation

Analytics and tracking

Services
Plausible Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Plausible Analytics
Marketing tools
Bugherd, CookieYes
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 and professional design
  2. Strong focus on AI agent development frameworks and platforms
  3. Comprehensive product suite with clear segmentation of frameworks and platforms
  4. Multiple customer logos and case studies indicating enterprise adoption
  5. Presence of privacy and cookie policies with consent mechanisms
  6. No direct contact emails or phone numbers publicly listed; contact via forms
  7. Use of modern web technologies and analytics tools
  8. No visible security policy or incident response contacts
  9. WHOIS data unavailable, which reduces transparency
Technical notes

Notes

The website is built using Webflow CMS with a modern JavaScript tech stack including Swiper JS for UI components, Google Tag Manager and Plausible for analytics, and Bugherd for issue tracking. Video content is hosted on Cloudflare Stream, indicating use of a reliable CDN and streaming platform. The site is mobile-optimized with responsive design and accessibility features such as focus outlines and semantic HTML. Performance is fast with asynchronous script loading and optimized media. Technical risks are minimal, though the absence of some security headers and WHOIS transparency are noted as areas for improvement.
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

Reviews of this site

Share your experience with langchain.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review langchain.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.