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Security report for android5.online

Technology · N/a

Medium risk. 9 critical or high findings in Email security, Security headers and 2 other checks.

Security score

57/100

Risk levelMedium

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

The website 'Android教程網' is a Chinese-language platform dedicated to providing tutorials and technical articles related to Android programming, Android phone usage, system tutorials, and game development. It targets Android developers and users seeking educational content in this niche. The business model appears to be content publishing without evident monetization or commercial services. Technically, the site uses basic HTML, CSS, and JavaScript without modern frameworks or CMS, resulting in moderate performance and basic mobile optimization. Security posture is weak due to lack of HTTPS enforcement, absence of security headers, and missing privacy and cookie policies. No contact or trust indicators are present, which limits business credibility. The domain uses privacy-protected WHOIS registration, which is common but reduces transparency. Overall, the site is safe for general audiences and fully accessible without WAF or blocking mechanisms.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

9 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. 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
    • 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';…

  3. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

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

Keep watching android5.online

This scan found 26 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
65
Security headers
15
Email security
40
DNS health
70
Network security
100
GDPR outside view
50
Average
57

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

The site occupies a niche in the technology education sector focused on Android. It leverages a network of related tutorial sites as partners, indicating a small ecosystem of similar content providers. The business model is likely ad-supported or informational, with no direct e-commerce or subscription services evident. The target audience includes Android developers and users in Chinese-speaking regions. Growth indicators or parent company affiliations are not visible. The site’s competitive advantage lies in its focused content but is limited by basic technical implementation and lack of modern digital marketing or analytics tools.

Security posture

Security maturity is low. The absence of HTTPS and security headers exposes users to potential risks such as data interception and clickjacking. Forms lack visible protections against CSRF or spam. No incident response or security policies are published. Privacy compliance is minimal with no GDPR indicators or cookie consent mechanisms. The use of privacy-protected WHOIS reduces transparency but is not uncommon for small sites. Overall, the site should prioritize implementing HTTPS, security headers, and privacy policies to improve trust and compliance.

Recommendations

  1. Implement HTTPS with a valid SSL certificate and enforce HTTPS redirects site-wide.
  2. Add standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish clear privacy and cookie policies with user consent mechanisms to comply with GDPR and other regulations.
  4. Add contact information and trust indicators to improve business credibility and user confidence.
  5. Enhance form security by adding anti-CSRF tokens and CAPTCHA to prevent abuse and spam.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
The website provides tutorials and technical articles related to Android programming, Android phones, Android system tutorials, and Android games. It offers guides on Android development, phone usage tips, flashing tutorials, and related technical content.
Key services
Android programming tutorials, Android phone usage guides, Android system tutorials, Android game development articles
Content quality
basic
Branding
moderate

Technology

Stack
HTML, CSS, JavaScript
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
30/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF detected.
  2. Content is primarily in Chinese language focused on Android tutorials and technical articles.
  3. No privacy, cookie, or terms of service policies found on the site.
  4. No contact emails, phone numbers, or social media links explicitly provided.
  5. Site uses basic HTML, CSS, and JavaScript with no modern frameworks detected.
  6. No security headers or HTTPS enforcement visible in provided data.
  7. External links mostly point to related tutorial and technology sites.
  8. No advertising or tracking technologies detected in the HTML content.
  9. Site content is safe and suitable for general audiences.
  10. WHOIS data is privacy protected, limiting transparency.
Technical notes

Notes

The website is built with basic HTML, CSS, and JavaScript without modern frameworks or CMS. The site includes a JavaScript-based image slider and multiple internal links to tutorial articles. Mobile optimization is basic with a viewport meta tag but no advanced responsive design detected. SEO is basic with a title tag but no meta description or Open Graph tags. No analytics or tracking scripts are present. Performance is moderate but could benefit from optimization. The hosting provider and infrastructure details are not disclosed. The site lacks modern accessibility features and security best practices.
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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