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Security report for oreillynet.com

O'Reilly Media · Technology · United States

Low risk. 2 critical or high findings in GDPR outside view.

Security score

83/100

Risk levelLow

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

O'Reilly Media is a well-established technology and business training company founded in 1978, offering a comprehensive online learning platform that empowers professionals, teams, and organizations worldwide. Their platform leverages AI and machine learning to provide personalized skill-building resources across a broad spectrum of technology and business topics. The company maintains a strong market position with a recognized brand and global presence, including offices in the US, UK, China, and Japan. Technically, the website employs modern web technologies including Google Tag Manager, Visual Website Optimizer, and jQuery, with good SEO and mobile optimization. The site is served over HTTPS with appropriate security headers, though some additional headers could enhance security posture. Analytics and marketing tools are used responsibly with visible privacy and cookie policies that include consent mechanisms. Security-wise, the site demonstrates good practices such as HTTPS enforcement and no visible vulnerabilities or exposed sensitive data. However, explicit security policies and incident response contacts are not publicly available, which could be improved to enhance trust and compliance. Overall, the website is professional, trustworthy, and well-maintained, with no blocking or WAF challenges detected. The lack of WHOIS data is noted but does not detract from the site's legitimacy given the strong business and technical indicators. Strategic recommendations include enhancing security headers, publishing security policies, and improving accessibility compliance.

Scanned

This is an earlier scan of oreillynet.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
58/ 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

2 findings rated critical or high. Fix these first.

  1. 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

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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
100
Security headers
75
Email security
75
DNS health
90
Network security
100
GDPR outside view
58
Average
83

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention oreillynet.com, from OffSeq Breach.

No leaked records found

Breach holds no records for oreillynet.com right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

O'Reilly Media operates a subscription-based online learning platform targeting technology professionals, enterprises, academic institutions, and government organizations. Their competitive advantage lies in their long-standing industry presence, expert content providers, and integration of AI/ML for personalized learning. Revenue streams primarily come from subscriptions and enterprise team licenses. The company shows growth through global office expansions and partnerships. Their ecosystem includes app platforms on iOS and Android, and social media engagement on LinkedIn and YouTube. The business model focuses on continuous skill development aligned with emerging technology trends.

Security posture

The website exhibits a mature security posture with HTTPS enforced and use of security headers like Content-Security-Policy and X-UA-Compatible. No sensitive data leakage or vulnerable libraries were detected in the HTML content. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. Compliance with GDPR is supported by comprehensive privacy and cookie policies with consent mechanisms. Overall, the security posture is strong but could benefit from formalized security documentation and public incident response channels.

Recommendations

  1. Implement additional HTTP security headers such as HSTS, X-Frame-Options, and X-Content-Type-Options to strengthen protection against common web attacks.
  2. Publish a dedicated security policy and incident response page including contact channels like security@ or abuse@ emails to improve transparency and trust.
  3. Conduct regular third-party library vulnerability assessments and update dependencies to mitigate risks.
  4. Enhance website accessibility to meet WCAG standards for broader inclusivity.
  5. Consider publishing a security.txt file to facilitate responsible vulnerability disclosure and engagement with security researchers.

Contact details published on the site

Addresses
Legal name
O'Reilly Media, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
O'Reilly Media
Description
The O'Reilly learning platform is a skill-building platform that equips individuals and teams with the resources that drive business outcomes. We help tech teams stay ahead. O'Reilly empowers professionals, teams, enterprises, academic institutions, and government organizations to forge a brighter future with guidance from the pioneers who shape today's world. For over 45 years, we've built a renowned community of expert active practitioners with a knack for teaching, and we've cultivated an inherent ability to anticipate technological and business developments by tracking emerging trends. O'Reilly uniquely offers a comprehensive online learning solution that provides insights from these visionary experts and nearly 200 respected providers. We cater to the needs of all learners with diverse content formats and coverage across an abundance of topic areas in all skill levels. And we leverage AI and ML for a truly personalized experience that drives productivity and fosters continuous learning. These distinct tools combined with our unmatched content make O'Reilly the clear choice to acquire in-demand skills, drive career growth, and stay ahead in a rapidly changing world.
Key services
online learning platform, technology and business training, team skill development, personalized AI/ML learning experiences
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, Visual Website Optimizer (VWO), jQuery, Google Analytics, JSON-LD structured data, HTML5, CSS3
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security headers
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Visual Website Optimizer
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Visual Website Optimizer
Marketing tools
VWO
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 no blocking detected.
  2. Strong use of structured data (JSON-LD) for corporate information.
  3. Multiple global office addresses and contact points provided.
  4. Use of modern analytics and A/B testing tools.
  5. No signs of adult or questionable content.
  6. WHOIS data unavailable, but no negative impact on trust from website content.
  7. Good privacy and cookie policies with consent mechanisms.
  8. No explicit security or incident response policies found on main site.
Technical notes

Notes

The website uses a modern technology stack including Google Tag Manager for analytics, Visual Website Optimizer for A/B testing, and jQuery for DOM manipulation. The presence of JSON-LD structured data improves SEO and semantic understanding. Performance is moderate with room for optimization, particularly in mobile responsiveness and accessibility. Hosting details are not explicitly identified, but CDN usage is evident for static assets. The site is well-structured with comprehensive meta tags and social media integration, supporting strong digital maturity. Technical risks are minimal but ongoing monitoring of third-party scripts and libraries is advised.
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. 83/100Low18 findingsView report
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