Rakuten Viber Messenger Security & Privacy Scorecard

Version: 27.5.0 (Build 27.5.0.4) | Analyzed: 2026-03-27

What This Means for You

Activity and usage patterns are shared with several advertising and analytics companies, including Facebook and Adjust, which use this data for ad targeting. Users will see advertising from multiple ad networks within the app. The protection applied to network connections falls short in certain conditions, meaning messages may travel with less protection than expected.

Recommendation: Use With Caution

Best For: Casual chats and group calls with friends
Avoid If: Sending highly sensitive or confidential messages

Key Findings

Data Security - 1 finding (1 medium)

Network Security - 2 findings (1 critical, 1 high)

Code Safety - 0 findings

Privacy - 3 findings (1 high, 2 low)

Privacy Concerns

What Data is Collected

Viber collects behavioral and usage data including interaction patterns, device identifiers, and activity history. This data supports advertising, analytics, and app improvement purposes.

Third-Party Data Sharing

User data is shared with the following third-party services:

• Facebook SDK - Behavioral data for ad targeting
• Adjust - Attribution and usage tracking
• Mixpanel - Usage analytics and behavioral profiling
• BrazeKit - Marketing engagement tracking
• Google AdMob - Advertising personalization
• Amazon APS - Advertising network
• Vungle - Video advertising network
• Firebase - App analytics and performance data

Understanding the Scores

Positive Security Features

• Data stored locally on the device is well-protected against unauthorized access
• The app's code includes strong integrity protections
• Payment processing is delegated to established, dedicated payment services rather than custom implementations

Areas for Improvement

• The protection applied to network connections falls short in certain conditions, meaning messages may travel with less protection than expected
• User activity is shared across a large number of advertising and analytics partners, giving users limited visibility into how data moves through the industry
• Ad serving from multiple competing networks increases the volume of behavioral data collected about users during normal use

About This Analysis

This scorecard is based on automated static analysis of the application's code and configuration as of the scan date. It represents the app's security and privacy posture at the time of analysis and may not capture every possible issue.

App Details