CITT

    Scan results

    Messenger

    iOS

    Facebook Messenger is a messaging app from Meta that enables users to send messages, make calls, and share media with contacts. The app includes end-to-end encryption for conversations and provides voice/video calling capabilities across Meta's social platform.

    CITT SCORE
    84
    out of 100
    TRUSTED

    Quick Verdict

    Best for: Staying in touch with friends and family

    Not For: You prefer keeping your activity off Meta's ad platform

    What It Means For You

    Messages and activity are tied to Meta's advertising ecosystem, meaning user interactions can influence the ads shown across Facebook and Instagram. Data about how the app is used is collected and linked to user identity.

    Method and Limitations

    Static analysis only. CITT reviewed the code of this build without running the app, so runtime behavior was not observed. The findings below describe the analyzed build and may not reflect server-side controls or later versions. CITT makes no determination about compliance with any law or platform policy; it reports what the artifacts contain and cites the published guidance so a reader can compare.

    How CITT scores an app

    Findings (2)

    Network Security

    1 total
    1 High

    Privacy

    1 total
    1 High

    Security Strengths

    • ✓Certificate pinning implemented
    • ✓E2E encrypted backups
    • ✓No third-party SDKs (100% first-party Meta frameworks)
    • ✓Message-level encryption
    What changed since the last scan

    Version diff is on the Developer plan. See developer plans.

    Context Tags

    social
    messaging
    contacts
    ads
    tracking
    network vulnerability

    Package

    com.facebook.Messenger

    Version

    554.0.0 (Build 917678550)

    Analysis Date

    Mar 27, 2026

    0

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    View on App Store

    Recommendation: Use With Caution

    Key Findings

    Data Security - 0 findings

    Network Security - 1 finding (1 high)

    Code Safety - 0 findings

    Privacy - 1 finding (1 high)

    Privacy Concerns

    What Data is Collected

    Usage patterns, messaging activity, and behavioral data are collected and linked to user identity. This includes how frequently the app is used, who the user contacts, and how they interact with content.

    Third-Party Data Sharing

    No third-party advertising or analytics services were observed in the app.

    Understanding the Scores

    • Security: 95/100
    • Privacy: 80/100
    • Data Security: 100/100
    • Network Security: 82/100
    • Code Safety: 100/100
    • Data Collection: 78/100
    • Data Sharing: 100/100
    • User Control: 80/100

    Positive Security Features

    • No specific positive security practices were observed for this version.

    Areas for Improvement

    • Network communications have room for additional hardening to better protect user data as it travels between the device and Meta's servers.
    • The scope of data collection tied to user identity is broad, limiting the ability to use the app without contributing to behavioral profiling across Meta's platforms.
    • Controls over what data is gathered could be more clearly surfaced within the app so users can make more informed choices about their privacy.

    About This Analysis

    App Details

    • App: com.facebook.Messenger
    • Package: com.facebook.Messenger
    • Version: 554.0.0 (Build 917678550)
    • Scan Date: 2026-03-27

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