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Security report for ucweb.com

UC Browser · Technology · N/a

Medium risk. 8 critical or high findings in Email security, Security headers and 2 other checks.

Security score

68/100

Risk levelMedium

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

UC Browser is a globally recognized mobile browser launched in 2004, boasting over 1 billion users by 2025 and significant market share in regions like India and Indonesia. It offers a feature-rich browsing experience including built-in VPN, ad-blocking, cloud storage, and AI-driven translation, targeting mobile users seeking speed and privacy. The website employs modern web technologies such as React, Google Tag Manager, and Hotjar, hosted on Alibaba Cloud infrastructure, delivering fast and mobile-optimized performance. Security posture is generally good with HTTPS enforced and some security best practices observed, though explicit security headers and incident response information are lacking. Privacy compliance is basic with a privacy policy present but no cookie consent mechanism or GDPR compliance indicators. WHOIS data is missing or obscured, which raises some concerns about domain registration transparency. Overall, the website is professional and functional but could improve in transparency and privacy compliance.

Scanned

This is an earlier scan of ucweb.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

8 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 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

    • 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

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

Keep watching ucweb.com

This scan found 21 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
77
Security headers
65
Email security
55
DNS health
75
Network security
100
GDPR outside view
35
Average
68

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

UC Browser holds a strong market position as a top three mobile browser globally, with a business model focused on free software enhanced by integrated services like VPN and cloud storage. Its competitive advantages include fast download speeds, smooth video playback, and AI-powered features. The target audience primarily consists of mobile users in emerging markets. The company leverages partnerships with major CDN and analytics providers but lacks visible direct contact or corporate registration information on the site. Growth indicators include large user base and extensive downloads. The ecosystem appears focused on user experience and privacy features, though transparency on corporate and security policies could be enhanced.

Security posture

The security maturity level is moderate to good, with HTTPS enforced and use of modern script loading practices. However, the absence of key security headers (e.g., CSP, X-Frame-Options) and lack of published security policies or incident response contacts indicate gaps in security governance. No vulnerabilities or exposed sensitive data were detected in the analyzed content. Privacy compliance is limited, with no cookie consent mechanism and minimal GDPR indicators. The missing WHOIS data reduces trust and complicates domain legitimacy verification. Overall, the security posture supports safe browsing but would benefit from enhanced transparency and formal security documentation.

Recommendations

  1. Implement and publish comprehensive security headers such as Content-Security-Policy and X-Frame-Options to mitigate common web attacks.
  2. Introduce a cookie consent banner and clearly communicate cookie usage to improve privacy compliance and user trust.
  3. Publish a detailed security policy and incident response contact information to enhance transparency and readiness.
  4. Clarify domain registration details or use verified WHOIS information to improve domain legitimacy and trustworthiness.
  5. Enhance accessibility features and navigation clarity to improve user experience and SEO.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
UC Browser
Description
UC Browser, launched in 2004, is a leading mobile browser with over 1 billion users by 2025. It holds over 30% market share in key regions such as India and Indonesia, competing with Firefox and Opera. The browser focuses on speed, privacy, and innovation.
Key services
Mobile web browsing, Built-in VPN, Ad blocking, Cloud storage (20GB free), AI-driven translation, Video playback and download
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React (implied by CSR and SSR scripts), Google Tag Manager, Hotjar, Alibaba CDN
Frameworks
React
Platforms
Web, Mobile
Performance
fast
Mobile
excellent
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of CSP and crossorigin attributes on scripts

Analytics and tracking

Services
Google Analytics (via GTM), Hotjar
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Hotjar
Marketing tools
Hotjar
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content.
  2. No explicit contact emails or phone numbers found on the main page.
  3. No visible privacy or cookie consent banners despite privacy policy presence.
  4. WHOIS data unavailable, indicating privacy protection or domain registration issues.
  5. Use of modern web technologies and analytics tools.
  6. No visible security policy or incident response information.
  7. User testimonials present, enhancing trust signals.
  8. No forms detected on the main page for data collection.
Technical notes

Notes

The website uses a modern JavaScript framework (likely React) with server-side rendering and client-side hydration. It leverages Alibaba Cloud CDN for hosting and delivery, ensuring fast load times and good mobile optimization. Analytics and user behavior tracking are implemented via Google Tag Manager and Hotjar, indicating a focus on user experience and marketing insights. The site lacks visible CMS indications and appears custom-built. Technical debt is minimal based on the clean structure and use of current technologies. Opportunities exist to improve security headers and privacy mechanisms to reduce risk and enhance 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. 77/100 +4Low23 findingsView report
  2. 73/100Medium26 findingsView report
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