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Security report for adbrogallery.com

Gister Private Limited · Media · Singapore

Medium risk. 3 critical or high findings in SSL/TLS and Security headers.

Security score

61/100

Risk levelMedium

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

ADBRO, operated by Gister Private Limited, is a digital marketing solutions provider specializing in high impact advertising channels across Southeast Asia. The company offers precise targeting and full-service campaign delivery, supported by a gallery of case studies showcasing successful collaborations with notable brands. The website is professionally designed, mobile-optimized, and uses modern web technologies including Webflow CMS and Google Tag Manager for analytics. Security posture is generally good with HTTPS enforced, but lacks some security headers and explicit incident response policies. The absence of WHOIS data raises concerns about domain registration legitimacy, though the business presence and certifications indicate a credible operation. Strategic improvements in security headers and privacy consent mechanisms are recommended to enhance compliance and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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

3 findings rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  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 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';…

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Keep watching adbrogallery.com

This scan found 18 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
0
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
83
Average
61

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

ADBRO positions itself as a regional leader in digital advertising with a focus on media and technology sectors. Its business model revolves around providing advertisers and publishers with impactful marketing solutions, leveraging partnerships with agencies and brands. The company maintains a professional online presence with clear branding and case studies that demonstrate campaign effectiveness. Revenue streams likely include advertising services and campaign management fees. The partnership ecosystem includes related domains such as adbrogallery.com and a help center, supporting client engagement and education. Growth indicators include active case studies and certifications from industry bodies like IAB SEA and TCF. Overall, ADBRO demonstrates a mature business operation with a focus on digital marketing innovation.

Security posture

The website enforces HTTPS and avoids exposing sensitive data in its HTML content. However, it lacks important security headers such as Content-Security-Policy and X-Frame-Options, which are critical for mitigating common web attacks. No explicit security or incident response policies are published, which may impact compliance with regulations like GDPR and NIS2. The use of third-party scripts like Google Tag Manager introduces moderate tracking but appears managed responsibly. The absence of a cookie consent mechanism is a compliance gap. Overall, the security maturity is moderate with room for improvement in headers, policies, and user consent mechanisms to strengthen data protection and incident readiness.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection against web attacks.
  2. Publish explicit security and incident response policies to improve transparency and regulatory compliance.
  3. Add a cookie consent banner or mechanism to ensure GDPR and privacy law compliance.
  4. Regularly audit and update third-party scripts to minimize vulnerabilities and privacy risks.
  5. Verify and update domain registration information to ensure legitimacy and trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Gister Private Limited
Description
ADBRO provides high impact marketing channels with precise targeting and full-service delivery, showcasing case studies and gallery examples of campaigns for various brands.
Key services
High impact digital advertising, Campaign case studies, Full-service marketing delivery
Content quality
good
Branding
consistent

Technology

Stack
Google WebFont Loader, jQuery 3.5.1, Webflow CMS, Google Tag Manager
Frameworks
Webflow
Platforms
Webflow Hosting
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge
  2. Content is focused on marketing solutions and case studies
  3. No phone numbers or physical addresses explicitly listed
  4. Contact email is a generic company email
  5. No security headers detected in provided data
  6. Uses modern web technologies and Webflow CMS
  7. Includes legal pages for privacy, cookie, and terms
  8. No explicit security or incident response policies found
  9. WHOIS data missing, raising domain registration concerns
Technical notes

Notes

The website is built on the Webflow platform, utilizing modern front-end technologies such as Google WebFont Loader and jQuery 3.5.1. It is hosted on Webflow's CDN, providing moderate performance and good mobile optimization. SEO is well addressed with proper meta tags and Open Graph data. Accessibility is basic but functional. The site integrates Google Tag Manager for analytics and tracking. No CMS other than Webflow is detected. The technical infrastructure is modern and stable, though performance could be improved with additional optimization. The lack of security headers and cookie consent mechanisms are technical gaps that should be addressed to enhance 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

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