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Security report for viber.com

Viber Media S.à r.l. · Telecommunications · N/a

Low risk. 3 critical or high findings in Security headers and Email security.

Security score

78/100

Risk levelLow

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

Viber is a globally recognized messaging and VoIP platform owned by Rakuten, offering free and secure calls, text messaging, and multimedia sharing services. The website presents a professional and comprehensive digital presence, targeting a broad audience seeking communication solutions across mobile and desktop devices. Key services include voice and video calls, group chats, and a rich set of expressive features like stickers and GIFs. The platform operates on a freemium model with additional paid services such as Viber Out for calls to non-users. Technically, the website leverages modern web technologies including WordPress CMS, Google Analytics, Mixpanel, and OneTrust for cookie consent management, ensuring a robust and user-friendly experience. The site is well-optimized for SEO, mobile responsiveness, and accessibility, reflecting a mature digital infrastructure. Security posture is strong with HTTPS enforced, cookie consent mechanisms, and security best practices observed, although explicit security headers could be further verified. The WHOIS data is unavailable publicly, likely due to privacy protection, which is common for large brands but slightly reduces transparency. Overall, the website is trustworthy, professional, and compliant with privacy regulations such as GDPR. Strategic recommendations include enhancing visible security headers, continuous third-party script audits, and improving direct contact information availability to bolster user trust further.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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. 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 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. 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.

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

Keep watching viber.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.

Daily monitoring

Recommended

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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
85
Security headers
40
Email security
70
DNS health
85
Network security
100
GDPR outside view
88
Average
78

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

Viber holds a strong market position as a major player in the telecommunications sector, particularly in messaging and VoIP services. Its competitive advantages include a large user base, cross-platform synchronization, and integration within the Rakuten ecosystem. The business model combines free core services with monetization through premium calling features. The target customer segments are global consumers and businesses seeking secure and versatile communication tools. The partnership ecosystem is robust, linking with multiple Rakuten subsidiaries and services, enhancing cross-promotion and user engagement. Growth indicators include continuous feature expansion and active community engagement. The company's operations reflect a strategic focus on privacy, security, and user experience, positioning it well against competitors in a crowded market.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of cookie consent management tools, and prevention of user enumeration attacks. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, explicit presence of certain security headers like X-Frame-Options and X-Content-Type-Options was not confirmed and should be verified. The use of third-party analytics and marketing scripts necessitates ongoing security audits to mitigate supply chain risks. Compliance with GDPR is evident through detailed privacy and cookie policies and user consent mechanisms. Incident response and vulnerability disclosure information are not publicly detailed, which is an area for potential improvement. Overall, the security maturity is high but can benefit from enhanced transparency and header configurations.

Recommendations

  1. Verify and implement explicit security headers such as X-Frame-Options and X-Content-Type-Options to strengthen browser security.
  2. Conduct regular security audits of third-party scripts and libraries to prevent supply chain vulnerabilities.
  3. Publish clear incident response and vulnerability disclosure policies to improve transparency and user trust.
  4. Enhance availability of direct contact information for support and security inquiries on the website.
  5. Maintain and update cookie consent and privacy mechanisms to comply with evolving regulations and best practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Viber Media S.à r.l.
Description
Free calls, text and picture sharing with anyone, anywhere!
Key services
Voice and video calls, Group chats and calls, Stickers and GIFs, Cross-device syncing
Content quality
excellent
Branding
consistent

Technology

Stack
Google Analytics, Mixpanel, OneTrust Cookie Consent, Yoast SEO, jQuery 3.6.0, Font Awesome, Google Fonts (Roboto)
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management
  • No exposed sensitive data in HTML
  • Use of security plugin to prevent user enumeration

Analytics and tracking

Services
Google Analytics, Mixpanel
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
AppAdjust
Tracking pixels
Mixpanel
Marketing tools
Mixpanel
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 multimedia.
  2. Strong branding consistent with Viber and Rakuten group.
  3. Comprehensive privacy and cookie policies with consent management.
  4. Use of modern analytics and marketing tools.
  5. No direct contact emails or phone numbers found on main pages.
  6. WHOIS data unavailable publicly, possibly due to privacy protection.
  7. No security challenge or WAF blocking detected.
  8. Mobile and desktop optimized with good performance.
  9. No adult or questionable content detected.
Technical notes

Notes

The website is built on WordPress CMS, utilizing modern JavaScript libraries and frameworks including jQuery 3.6.0, Mixpanel, and Google Analytics for tracking and analytics. It employs OneTrust for cookie consent management, ensuring compliance with privacy laws. The hosting infrastructure appears to leverage Akamai CDN services, enhancing performance and security. The site is optimized for mobile devices with responsive design and accessibility features. SEO optimization is robust, with proper meta tags, Open Graph, and JSON-LD structured data implemented. Performance is moderate, with multimedia content such as videos and images well integrated. Technical risks are minimal but include reliance on multiple third-party scripts which require ongoing monitoring. Overall, the technical implementation reflects a mature and well-maintained digital platform.
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. 75/100Medium20 findings · partial scanView report
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