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Security report for knowbe4.com

KnowBe4, Inc. · Technology · United States

Partial score · DNS & email only

75/100

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

KnowBe4, Inc. operates a leading human risk management platform focused on security awareness training, cloud email security, and AI-powered defense solutions. The company is positioned as a market leader trusted by top cybersecurity firms globally, offering a comprehensive suite of products designed to reduce human-related cybersecurity risks. Their digital infrastructure leverages modern web technologies, HubSpot CMS, and cloud hosting via AWS and Cloudflare, ensuring a responsive and secure user experience. Security practices include strong HTTP headers and HSTS, though TLS protocols are not currently enabled, and a subdomain takeover vulnerability exists on a staging subdomain. Overall, KnowBe4 demonstrates a mature security posture with room for improvement in SSL/TLS configuration and vulnerability management. Strategic recommendations include upgrading TLS support, mitigating subdomain risks, and enhancing DNS security controls to maintain trust and compliance.

Scanned

This is an earlier scan of knowbe4.com. View the latest report
3 of 7 checks could not complete. The site may be unreachable or blocking automated scans, so the results below cover only what could be checked. Try a rescan later.

NIS2 and GDPR posture

NIS2 outside view
Not assessed
GDPR outside view
Not assessed

Both readouts depend on the site's pages, which could not be loaded in this scan.

Priority findings

1 finding rated critical or high. Fix these first.

  1. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Potential Subdomain Takeover

      Subdomain staging.knowbe4.com points to unregistered service kmsat-webapp-staging-998164134.us-east-1.elb.amazonaws.com

      What to do: Remove or fix CNAME record to prevent subdomain takeover

      • WSTG-CONF-10
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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Keep watching knowbe4.com

This scan found 6 issues across 3 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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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

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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
87
Email security
100
DNS health
65
Network security
100
Average
88
After the cap
75

Not counted

  • Security headers: did not complete in this scan.
  • GDPR outside view: did not complete in this scan.
  • 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 knowbe4.com, from OffSeq Breach.

Total records
10,611
Employees
5
Customers
10,540
Third parties
66
Weak passwords
10%

Latest record dated 2025-12-20 · 20 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for knowbe4.com.

Select it in the checkout above.

Masked preview

  • –training.knowbe4.com2025-12-20
  • –training.knowbe4.com2025-07-17
  • –training.knowbe4.com2025-07-03
  • –training.knowbe4.com2025-06-12
  • –training.knowbe4.com2025-04-14

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)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

KnowBe4's business model centers on SaaS delivery of cybersecurity awareness and human risk management tools, targeting enterprises and organizations concerned with social engineering and phishing threats. Their market position is strong, supported by industry awards, extensive customer testimonials, and partnerships. The company offers a broad product portfolio including training, email security, compliance, and AI defense agents, catering to a global audience with multi-language support. Their marketing ecosystem integrates advanced analytics, remarketing, and customer engagement tools, reflecting a sophisticated digital presence. The partnership portal domain indicates an active partner ecosystem. No direct evidence of parent or subsidiary companies was found. The company emphasizes customer success and continuous content updates, reinforcing their competitive advantage.

Security posture

KnowBe4 exhibits a solid security posture with key HTTP security headers implemented, including HSTS and Content-Security-Policy. SSL certificates are valid and issued by Amazon RSA 2048 M02, but no TLS protocols are enabled, which is a significant security gap. Cookies are set with Secure and HttpOnly flags and SameSite=None, supporting secure session management. The presence of a subdomain takeover vulnerability on staging.knowbe4.com poses a risk that should be addressed promptly. No explicit incident response or vulnerability disclosure policies were found on the main site. GDPR compliance is supported by privacy and cookie policies with consent mechanisms. Overall, the security score is good but could be improved by enabling modern TLS versions and addressing DNS and subdomain risks.

Recommendations

  1. Enable TLS 1.2 or higher protocols to secure HTTPS communications.
  2. Mitigate the subdomain takeover vulnerability on staging.knowbe4.com by removing or properly configuring the DNS entry.
  3. Implement CAA DNS records to restrict certificate issuance to authorized CAs.
  4. Consider submitting the domain for HSTS preload to enhance transport security.
  5. Regularly audit and update security headers and cookie policies to maintain compliance and security posture.
Technical notes

Notes

The website is built on HubSpot CMS with extensive use of JavaScript libraries including jQuery, Slick Carousel, AOS for animations, and Vimeo Player API for video content. Hosting is provided via AWS with Cloudflare CDN for performance and security. The site is optimized for mobile with responsive design and accessibility considerations. Performance is fast with caching headers and edge caching enabled. SEO is supported by canonical tags, hreflang for multi-language support, and structured metadata. The technical stack is modern and well-integrated, though the lack of TLS protocol support is a critical technical risk. The site uses multiple marketing and analytics tools, indicating a mature digital marketing infrastructure.
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. 71/100Medium25 findingsView report
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