CITT

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    Mysterium VPN: Fast & Secure

    Android

    Keep your internet freedom and browse freely. Mysterium VPN is a powerful, private, and secure VPN app with the largest pool of residential IPs. Unblock censorship, stay protected on public Wi-Fi, keep content while travelling in 100+ countries.

    CITT SCORE
    52
    out of 100
    unTRUSTED

    Quick Verdict

    Best for: Bypassing geo-restrictions on a budget

    Not For: users wanting full privacy from their VPN provider

    What It Means For You

    The connection is protected with strong technical safeguards, but the app collects data about user activity and shares it with outside parties. Users have limited control over this data collection. For users who rely on a VPN to keep their activity private from their provider, the app's own data practices work against that goal.

    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 (15)

    Data Security

    4 total
    4 Info

    Network Security

    2 total
    1 Low
    1 Info

    Code Security

    4 total
    3 Low
    1 Info

    Privacy

    2 total
    2 Medium

    Third-Party Risk

    3 total
    1 Low
    2 Info
    What changed since the last scan

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

    Package

    com.mysteriumvpn.android

    Version

    2.4.1 (versionCode 199)

    Analysis Date

    Mar 24, 2026

    Classes Analyzed

    6,361

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    View on Play Store

    Recommendation: Use With Caution

    Key Findings

    Data Security - 4 findings (4 info)

    Network Security - 2 findings (1 low, 1 info)

    Code Safety - 0 findings

    Privacy - 2 findings (2 medium)

    Privacy Concerns

    What Data is Collected

    The app collects data about connection activity and usage patterns. Users have limited options to control or reduce this collection, which contributes to a low overall Privacy score of 35 out of 100.

    Third-Party Data Sharing

    No third-party advertising or analytics services were identified in the app. Data sharing with the developer's own systems is a concern, however. The Data Sharing score of 30 out of 100 reflects limited transparency around how user data is used beyond providing the core service.

    Understanding the Scores

    CategoryScore
    Security93/100
    Privacy35/100
    Data Security100/100
    Network Security97/100
    Code Safety92/100
    Data Collection55/100
    Data Sharing30/100
    User Control40/100

    Positive Security Features

    • Data handled within the app is secured to a high standard. This category scored a perfect 100 out of 100.
    • Network communications are well-protected, with strong safeguards applied to data in transit, reflected in a 97 out of 100 Network Security score.
    • The app's code structure raises no safety concerns across all areas reviewed, scoring 92 out of 100 for Code Safety.

    Areas for Improvement

    • The app collects data about user activity and gives users limited options to reduce or opt out of that collection. User Control scored 40 out of 100.
    • Data sharing practices lack transparency. Data generated by users may be used or shared in ways that are not fully clear, as reflected in the Data Sharing score of 30 out of 100.
    • Users who need strong privacy guarantees from their service provider should look for an app with a stricter no-logs policy and clearer, enforceable data controls.

    About This Analysis

    This scorecard is based on automated static analysis of the app's code and configuration. Scores reflect the state of the app at the time of the analysis and may not capture server-side behavior or changes made after the scan date.

    App Details

    FieldValue
    AppMysterium VPN: Fast & Secure
    Packagecom.mysteriumvpn.android
    Version2.4.1 (build 199)
    Scan DateMarch 24, 2026
    PlatformAndroid

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