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Security report for du88.world

DU88 · Other · Vietnam

Medium risk. 7 critical or high findings in Email security, Security headers and 2 other checks.

Security score

65/100

Risk levelMedium

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

DU88 is an online gambling and betting platform targeting Vietnamese users, offering a wide range of services including sports betting, casino games, lottery, and jackpot games. The website is well-structured with comprehensive content, SEO optimizations, and detailed user guides. Technically, it is built on WordPress using the Flatsome theme and Rank Math SEO plugin, hosted with GoDaddy domain registration and Cloudflare DNS. Security posture is moderate with HTTPS enforced and domain lock statuses, but lacks advanced security headers and DNSSEC. The WHOIS data raises concerns due to a future domain creation date inconsistent with the website's claimed operational history. Contact information is complete and transparent, but no explicit security or incident response policies are published. Overall, the site is functional and professional but has trust issues related to domain registration data.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

7 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 du88.world

This scan found 22 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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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
75
Security headers
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
65
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

DU88 positions itself as a leading online betting platform in Asia, with a focus on Vietnamese customers. It leverages partnerships with known game providers and banking institutions to offer diverse gambling products. The business model relies on user registrations, deposits, and betting activities, supported by promotional campaigns and VIP programs. The presence of a brand ambassador and strategic partners like VM88.world indicates active marketing and ecosystem expansion. However, the suspicious domain registration data may impact credibility and regulatory compliance perceptions.

Security posture

The website enforces HTTPS and uses domain lock statuses to prevent unauthorized domain changes. However, the absence of DNSSEC and advanced HTTP security headers limits its defense against DNS spoofing and other web attacks. No published security policies or incident response contacts reduce transparency and preparedness perception. The site uses third-party scripts and plugins common in WordPress environments, which require regular security audits. Overall, the security posture is moderate but could be significantly improved with better DNS security, security headers, and published policies.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish a clear security policy and incident response contact information on the website.
  3. Implement advanced HTTP security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options.
  4. Regularly audit and update WordPress plugins and themes to mitigate vulnerabilities.
  5. Review and clarify domain registration details to align with website claims and improve trustworthiness.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DU88
Description
Du88 là nhà cái trực tuyến uy tín tại Việt Nam. Cung cấp đa dạng sản phẩm như: thể thao, casino, xổ số, nổ hũ, đá gà và nhiều trò chơi hấp dẫn khác.
Key services
Sports betting, Casino games, Lottery, Jackpot games, Cockfighting, Fish shooting games
Content quality
good
Branding
consistent

Technology

Stack
WordPress, PHP, jQuery, Flatsome theme, Rank Math SEO plugin
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Domain locked with EPP status flags
  • No exposed sensitive data in HTML
  • Use of Cloudflare DNS

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Marketing tools
Rank Math SEO
Transparency
basic

Site quality

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

Key observations

  1. Website is a Vietnamese online gambling platform with extensive content and multiple service offerings.
  2. Content is in Vietnamese language with structured data and SEO optimizations.
  3. No WAF or blocking detected; full content accessible.
  4. Domain WHOIS data is suspicious with future creation date, reducing trust.
  5. No explicit security or incident response policies published.
  6. Contact info is complete with email, phone, and physical address.
  7. Website uses WordPress with Flatsome theme and Rank Math SEO plugin.
  8. External links include partner vm88.world and suspicious domain jjhh.69tl.vip for registration.
  9. No advanced security headers detected beyond basic HTTPS and domain lock statuses.
  10. Content safety rated questionable due to gambling content requiring adult audience.
Technical notes

Notes

The website is built on a modern WordPress CMS platform using the Flatsome theme and Rank Math SEO plugin, indicating a focus on SEO and user experience. It uses jQuery and standard web technologies. Hosting and DNS are managed via GoDaddy and Cloudflare respectively. Performance is moderate with prefetching and caching hints. Mobile optimization is good with responsive design. Accessibility is basic but present. No major technical debt detected, but security enhancements are recommended. The domain WHOIS data is inconsistent, suggesting potential risks in domain management or legitimacy.
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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