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Security report for opensesame.com

OpenSesame · Technology · United States

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

Security score

75/100

Risk levelMedium

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

OpenSesame is a well-established online training platform founded in 2011, offering a vast catalog of expert-led courses aimed at helping businesses close skill gaps and develop their workforce. The company leverages AI-powered recommendations and curated content to deliver scalable learning solutions. Their market position is strong within the corporate training and e-learning sectors, supported by a professional website with rich multimedia and comprehensive resources. Technically, the site uses WordPress CMS with integrations including HubSpot, Wistia, and Google Tag Manager, reflecting a mature digital infrastructure. Security posture is solid with HTTPS, security headers, and secure forms, though public vulnerability disclosure and incident response information are lacking. Overall, the website is professional, trustworthy, and well-optimized for SEO and user experience, but WHOIS data is incomplete or protected, slightly reducing transparency.

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

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 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. 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

  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 opensesame.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.

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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
72
Security headers
30
Email security
87
DNS health
85
Network security
100
GDPR outside view
73
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

OpenSesame operates a B2B SaaS and content marketplace business model targeting organizations seeking scalable employee training. Their competitive advantage lies in a large course catalog, AI-driven curation, and expert support services. The company serves a broad range of industries with compliance, business skills, safety, technology, and wellness training. Partnerships with known publishers and integration with popular LMS platforms enhance their ecosystem. Growth indicators include active marketing, events, and a strong resource hub. The company maintains a consistent brand and professional online presence, supporting credibility and customer trust.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, multiple security headers, and secure form handling. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a public vulnerability disclosure policy or security.txt file and lack of incident response contact details represent gaps in transparency and readiness. The use of third-party scripts and marketing tools necessitates ongoing security audits. Overall, the security maturity is good but could be improved by publishing formal security policies and response procedures.

Recommendations

  1. Publish a public vulnerability disclosure policy or security.txt file to enhance transparency and encourage responsible reporting.
  2. Provide clear incident response contact information, such as a dedicated security email address.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Enhance privacy compliance disclosures, including detailed data retention policies and cookie management.
  5. Consider obtaining and displaying recognized security certifications to boost customer trust.

Contact details published on the site

Addresses
Legal name
OpenSesame, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OpenSesame
Description
OpenSesame is a comprehensive online training platform offering thousands of expert-led courses designed to close skill gaps with AI-powered recommendations and curated content. It serves businesses aiming to develop workforce skills for the future.
Key services
Online training course marketplace, AI-powered skills development, Custom course creation and translation, Learning program curation and management
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, jQuery, Google Tag Manager, HubSpot, Wistia video embeds, Swiper slider
Frameworks
Yoast SEO
Platforms
HubSpot CRM and marketing, Wistia video hosting
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure forms with validation

Analytics and tracking

Services
HubSpot Analytics, Google Analytics, Facebook Analytics, LinkedIn Insight Tag, Bing Ads
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Bing Ads, Facebook Ads
Tracking pixels
Facebook Pixel, HubSpot Analytics
Marketing tools
HubSpot, ClickCease
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 multimedia
  2. Professional and consistent branding and design
  3. Comprehensive navigation with multiple sections and resources
  4. Use of modern web technologies and marketing tools
  5. No signs of malicious or suspicious content
  6. WHOIS data unavailable or protected, limiting domain trust transparency
Technical notes

Notes

The website is built on WordPress CMS with a modern tech stack including jQuery, Swiper slider, and integrations with HubSpot and Wistia for marketing and multimedia. SEO is well-implemented using Yoast SEO plugin, with proper meta tags and structured data. Performance is moderate with room for optimization, especially in loading times for multimedia content. Mobile optimization and accessibility are good, supporting a wide range of users. Technical risks are minimal but include reliance on multiple third-party scripts which require continuous monitoring. Opportunities exist to improve performance and security transparency.
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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