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Security report for bitterbrains.com

BitterBrains Inc. · Technology · N/a

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

BitterBrains Inc. is a technology company specializing in developer education, certification, and learning resources. The company has established a strong market presence with over 2 million developers engaged and partnerships with major global corporations such as Microsoft, Google, and Amazon. Their platform supports developers throughout their career journey with hands-on practice and real-world assessments. Technically, the website is built using modern frameworks like Vue.js and Nuxt.js, hosted behind Cloudflare, and employs Google reCAPTCHA for bot protection. The site is mobile optimized and presents a professional design. Security posture is moderate with HTTPS enabled and domain registration protections in place, but lacks advanced security headers and DNSSEC. Privacy compliance is weak due to the absence of privacy and cookie policies. Overall, the website is credible and trustworthy but would benefit from enhanced privacy and security disclosures.

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

6 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

    • 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 bitterbrains.com

This scan found 24 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.

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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
52
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
53
Average
65

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

BitterBrains operates in the developer education sector, targeting individual developers and enterprise clients. Their business model likely includes certification fees, training subscriptions, and partnerships with large companies. The extensive list of partner logos indicates a broad ecosystem and strong industry relationships. The company appears medium-sized, founded in 2017, with a focus on technology education. Growth indicators include high developer engagement and certification issuance. The lack of explicit contact information and privacy policies suggests room for improvement in customer engagement and compliance.

Security posture

The website demonstrates a basic to moderate security maturity level. HTTPS is enforced, and domain registration statuses prevent unauthorized changes. Use of Google reCAPTCHA adds bot mitigation. However, the absence of DNSSEC and security headers like Content-Security-Policy and X-Frame-Options exposes potential risks. No public security policy or incident response contacts are provided, limiting transparency. There are no visible vulnerabilities or exposed sensitive data in the analyzed content. Compliance gaps exist regarding GDPR and cookie consent. The security culture could be enhanced by publishing clear policies and implementing recommended headers.

Recommendations

  1. Enable DNSSEC to strengthen domain name system security.
  2. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a detailed privacy policy and cookie policy with GDPR compliance statements.
  4. Provide clear contact information including security incident response and data protection officer contacts.
  5. Add a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
BitterBrains Inc.
Description
BitterBrains Inc. provides developer education and certification services, supporting developers through learning resources, hands-on practice, real-world assessments, and certifications. They have engaged over 2 million developers and issued over 4,300 certifications, serving clients from large global companies.
Key services
Developer education, Certifications, Learning resources, Hands-on practice, Real-world assessments
Content quality
good
Branding
consistent

Technology

Stack
Vue.js, Nuxt.js, Tailwind CSS, Google reCAPTCHA
Frameworks
Vue.js, Nuxt.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA for bot protection
  • Domain status includes clientDeleteProhibited, clientRenewProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Google reCAPTCHA
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is professionally designed and mobile optimized.
  2. No visible privacy, cookie, or terms of service policies found on the main page or linked content.
  3. No contact emails or phone numbers explicitly provided on the main page.
  4. Strong brand presence with logos of major partner companies.
  5. Use of modern web technologies and frameworks.
  6. Security headers and policies could be improved.
  7. No vulnerability disclosure or security.txt found.
  8. No explicit data protection officer or incident response information available.
Technical notes

Notes

The website uses a modern technology stack with Vue.js and Nuxt.js frameworks and Tailwind CSS for styling. Hosting is managed via Cloudflare, providing CDN and DNS services. Google reCAPTCHA is integrated for bot protection. The site is mobile responsive and well-structured with good design quality. Performance is moderate, with potential improvements in SEO and accessibility. No CMS detected, indicating a custom or framework-based site. Technical risks include missing security headers and lack of DNSSEC. Overall, the infrastructure supports a professional online presence but can be improved for security and compliance.
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. 71/100Medium27 findingsView report
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