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Security report for mostlogin.com

HONGKONG SUPERSOFT TECHNOLOGY LIMITED · Technology · Hong Kong

Medium risk. 4 critical or high findings in Security headers and GDPR outside view.

Security score

70/100

Risk levelMedium

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

MostLogin is a Hong Kong-based technology company specializing in a secure anti-detect browser designed for managing multiple online accounts safely and anonymously. Their product targets industries such as e-commerce, social media management, affiliate marketing, and digital marketing, offering features like fingerprint masking, proxy rotation, automation, and team collaboration. The company positions itself as a professional-grade solution with a growing global user base exceeding 200,000 users. Technically, the website is built using modern frameworks including React and Next.js, with integration of analytics and marketing tools such as Google Tag Manager, Facebook Pixel, and Bing UET. The platform supports Windows and macOS, and the website demonstrates excellent performance, mobile optimization, and SEO practices. From a security perspective, the site enforces HTTPS and includes standard security headers, cookie consent mechanisms, and privacy policies compliant with GDPR. However, it lacks explicit security policy documentation and incident response contact details, which are recommended for enhanced trust and compliance. The WHOIS data for the domain is missing or unavailable, which raises concerns about domain registration legitimacy. Despite this, the website content and business presentation are professional and trustworthy. Overall, the site scores well on content quality, technical implementation, and security posture, but the missing WHOIS data and lack of explicit security policies slightly reduce its business credibility score.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

4 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 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';…

  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

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

Keep watching mostlogin.com

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

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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
100
Security headers
20
Email security
55
DNS health
65
Network security
100
GDPR outside view
80
Average
70

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

MostLogin operates in the niche market of anti-detect browsers, catering to professionals who require multi-account management without detection risks. Their subscription-based business model includes a free pioneer program and paid cloud phone features. The company leverages partnerships and a referral program to expand its user base. The target customers are global marketers, e-commerce sellers, affiliate marketers, social media managers, and crypto teams. The company demonstrates strong branding consistency, customer engagement through testimonials, and active social media presence, indicating a mature and growing business. Competitive advantages include comprehensive product features, team collaboration capabilities, and automation support. The company’s strategic focus on privacy and security aligns well with market demands for anonymity and operational efficiency in digital marketing and e-commerce sectors.

Security posture

The website exhibits a mature security posture with HTTPS enforcement and multiple security headers implemented. The presence of cookie consent and privacy policy indicates compliance with privacy regulations. However, the absence of a dedicated security policy or incident response page and lack of a security contact email are gaps that could impact user trust and regulatory compliance. No vulnerabilities or exposed sensitive data were detected in the website content. The use of modern frameworks and regular updates likely contribute to a secure environment. The missing WHOIS data is a concern from a domain legitimacy perspective but does not directly impact the website’s technical security. Overall, the security maturity is good but could be improved by publishing explicit security policies and providing clear incident response contacts.

Recommendations

  1. Publish a dedicated security policy and incident response page to enhance transparency and trust.
  2. Provide a direct security contact email (e.g., security@mostlogin.com) for vulnerability reporting and incident communication.
  3. Monitor and update WHOIS registration data to ensure domain legitimacy and reduce suspicion.
  4. Enhance privacy compliance disclosures with detailed data retention policies and user rights information.
  5. Continue to maintain and update security headers and encryption standards to stay ahead of emerging threats.

Contact details published on the site

Addresses
Legal name
HONGKONG SUPERSOFT TECHNOLOGY LIMITED
Registration number
registration now
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
HONGKONG SUPERSOFT TECHNOLOGY LIMITED
Description
MostLogin is a secure anti-detect browser for managing multiple accounts. It offers fingerprint masking, proxy rotation, automation, and isolated browser profiles to avoid bans. It targets eCommerce, social media, affiliate marketing, digital marketing, and SEO industries.
Key services
Anti-detect browser, Multi-account management, Team collaboration, Extension integration, Automation, Cloud phone (coming soon)
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Chromium-based browser technology, Google Tag Manager, Facebook Pixel, Bing UET
Frameworks
Next.js, Ant Design
Platforms
Windows, macOS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of modern JavaScript frameworks
  • Cookie consent banner implemented

Analytics and tracking

Services
Google Analytics, Facebook Pixel, Bing UET
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads, Bing Ads, Facebook Ads
Tracking pixels
Facebook Pixel
Marketing tools
Intercom
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking detected.
  2. Professional design and clear navigation with multi-language support.
  3. Strong focus on anti-detect browser technology for multi-account management.
  4. Comprehensive product features and customer testimonials enhance trust.
  5. Active social media presence and multiple contact channels provided.
  6. No explicit security policy or incident response page found.
  7. WHOIS data missing, which is a concern for domain legitimacy verification.
  8. Cookie consent and privacy policy are implemented and GDPR compliant.
  9. Use of modern web technologies and analytics tools is evident.
Technical notes

Notes

The website is built on a modern technology stack featuring React and Next.js frameworks, enabling server-side rendering and optimized performance. It uses Ant Design for UI components, ensuring a consistent and professional design. The site integrates multiple analytics and marketing tools such as Google Tag Manager, Facebook Pixel, and Bing UET for user behavior tracking and advertising. Performance is fast with good mobile optimization and accessibility features. SEO is well implemented with comprehensive meta tags, Open Graph data, and multilingual support. No CMS was detected, indicating a custom or framework-based solution. Hosting provider details are not explicitly available. Technical risks are minimal, but the absence of WHOIS data and security policy documentation are areas for improvement to reduce operational and reputational risks.
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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