Silent Phone - Secure Calling
Silent Circle, Inc. · Build 6.15.1
Static checks identify review items, not a guarantee of safety.
Overview
2 finding categories to review
Silent Phone - Secure Calling (com.silentcircle.silentphone) scored grade A, 98 out of 100, in a static scan of version 6.15.1 on 2026-10-10. It has no high or critical findings, and 2 lower-severity finding categories across 5 occurrences. No tracking SDKs were recognised in the package. This is static analysis of a single build: it does not observe the app running and does not establish that any data is exposed.
Start with these findings
lowAmazon S3 bucket reference1 occurrence
Interpretation & review guidance
A reference to an Amazon S3 bucket. Using cloud storage is normal — the risk exists only if the bucket allows anonymous listing/read, which requires a separate authorized assessment.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
lowPrivate key material (third-party library artifact, shared across 35 unrelated developers)4 occurrences
Interpretation & review guidance
A complete PEM private-key block is embedded in the app. This is a real finding worth review — but it is often a bundled library test/sample key rather than a production secret, so we flag it high and leave confirmation to you (a bare header alone no longer triggers it).
- Evidence
- 4 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Build & components
59 components recorded. Certificate parsing does not validate APK signature integrity.
Inspect build evidence →Findings
2 categories · 5 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.
lowAmazon S3 bucket reference1 occurrence
Interpretation & review guidance
A reference to an Amazon S3 bucket. Using cloud storage is normal — the risk exists only if the bucket allows anonymous listing/read, which requires a separate authorized assessment.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
resources.arsc- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
s3_path_url- Recorded file locations
resources.arsc
1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
lowPrivate key material (third-party library artifact, shared across 35 unrelated developers)4 occurrences
Interpretation & review guidance
A complete PEM private-key block is embedded in the app. This is a real finding worth review — but it is often a bundled library test/sample key rather than a production secret, so we flag it high and leave confirmation to you (a bare header alone no longer triggers it).
- Evidence
- 4 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
lib/armeabi-v7a/libtivi.so- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
private_key- Recorded file locations
lib/armeabi-v7a/libtivi.solib/x86/libtivi.solib/x86_64/libtivi.solib/arm64-v8a/libtivi.so
4 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
No categories match these filters. Clear the search or choose all severities.
Privacy signals
Capabilities and bundled software do not prove that data was collected or transmitted.
Precise location Approx. location Camera Microphone Contacts Phone state Accounts
Requested permission inventory (39)
Data collection & flow (privacy signal, not part of the grade)
- Personal-data permissions/identifiers appear on-device, but no third-party analytics/advertising SDKs were detected that would receive them.
This maps what the app can access (permissions it requests, identifier APIs its code references) to the third parties bundled in it. It reflects capability and SDK presence — not proof that a specific value was transmitted.
Data Safety comparison not recorded.
No SDKs detected by this scan.
Build & components
Scanned build 6.15.1. Store metadata may describe a newer release.
c5ad6c0a2ff9478ac7467c3de0f23f9d7a7a3258fbbd08d773f840775b97f287Signing certificate (who signed this build — factual, not part of the grade)
20:06:ae:e8:0a:af:fe:26:98:be:34:24:e1:36:01:76:2c:22:bc:7a:60:80:20:b4:a8:6b:0d:8b:b9:31:35:22The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.
Component inventory
59 components. Advisory matching covers a curated set; no match is not proof that a component is vulnerability-free.
| Component | Version | Advisory matches |
|---|---|---|
androidx.activity:activity | 1.9.1 | None recorded |
androidx.activity:activity-ktx | 1.9.1 | None recorded |
androidx.annotation:annotation-experimental | 1.4.1 | None recorded |
androidx.appcompat:appcompat | 1.7.1 | None recorded |
androidx.appcompat:appcompat-resources | 1.7.1 | None recorded |
androidx.asynclayoutinflater:asynclayoutinflater | 1.0.0 | None recorded |
androidx.cardview:cardview | 1.0.0 | None recorded |
androidx.constraintlayout:constraintlayout | 2.2.1 | None recorded |
androidx.coordinatorlayout:coordinatorlayout | 1.1.0 | None recorded |
androidx.core:core | 1.16.0 | None recorded |
androidx.core:core-ktx | 1.16.0 | None recorded |
androidx.core:core-viewtree | 1.0.0 | None recorded |
androidx.cursoradapter:cursoradapter | 1.0.0 | None recorded |
androidx.customview:customview | 1.1.0 | None recorded |
androidx.customview:customview-poolingcontainer | 1.0.0 | None recorded |
androidx.documentfile:documentfile | 1.0.0 | None recorded |
androidx.drawerlayout:drawerlayout | 1.1.1 | None recorded |
androidx.dynamicanimation:dynamicanimation | 1.0.0 | None recorded |
androidx.emoji2:emoji2 | 1.3.0 | None recorded |
androidx.emoji2:emoji2-views-helper | 1.3.0 | None recorded |
androidx.exifinterface:exifinterface | 1.4.1 | None recorded |
androidx.fragment:fragment | 1.5.4 | None recorded |
androidx.fragment:fragment-ktx | 1.3.6 | None recorded |
androidx.interpolator:interpolator | 1.0.0 | None recorded |
androidx.legacy:legacy-support-core-ui | 1.0.0 | None recorded |
androidx.legacy:legacy-support-core-utils | 1.0.0 | None recorded |
androidx.legacy:legacy-support-v13 | 1.0.0 | None recorded |
androidx.legacy:legacy-support-v4 | 1.0.0 | None recorded |
androidx.loader:loader | 1.0.0 | None recorded |
androidx.localbroadcastmanager:localbroadcastmanager | 1.0.0 | None recorded |
androidx.media:media | 1.0.0 | None recorded |
androidx.palette:palette | 1.0.0 | None recorded |
androidx.preference:preference | 1.2.1 | None recorded |
androidx.print:print | 1.0.0 | None recorded |
androidx.profileinstaller:profileinstaller | 1.4.0 | None recorded |
androidx.recyclerview:recyclerview | 1.4.0 | None recorded |
androidx.room:room-ktx | 2.6.1 | None recorded |
androidx.room:room-runtime | 2.6.1 | None recorded |
androidx.savedstate:savedstate | 1.2.1 | None recorded |
androidx.savedstate:savedstate-ktx | 1.2.1 | None recorded |
androidx.slidingpanelayout:slidingpanelayout | 1.2.0 | None recorded |
androidx.sqlite:sqlite | 2.4.0 | None recorded |
androidx.sqlite:sqlite-framework | 2.4.0 | None recorded |
androidx.startup:startup-runtime | 1.1.1 | None recorded |
androidx.swiperefreshlayout:swiperefreshlayout | 1.0.0 | None recorded |
androidx.tracing:tracing | 1.2.0 | None recorded |
androidx.tracing:tracing-ktx | 1.2.0 | None recorded |
androidx.transition:transition | 1.5.0 | None recorded |
androidx.vectordrawable:vectordrawable | 1.1.0 | None recorded |
androidx.vectordrawable:vectordrawable-animated | 1.1.0 | None recorded |
androidx.versionedparcelable:versionedparcelable | 1.1.1 | None recorded |
androidx.viewpager2:viewpager2 | 1.1.0-beta02 | None recorded |
androidx.viewpager:viewpager | 1.0.0 | None recorded |
androidx.window:window | 1.0.0 | None recorded |
androidx.work:work-runtime | 2.10.2 | None recorded |
com.google.android.material:material | 1.12.0 | None recorded |
com.squareup.okhttp3:okhttp | 4.10.0 | None recorded |
kotlinx:coroutines_android | 1.7.3 | None recorded |
kotlinx:coroutines_core | 1.7.3 | None recorded |
About this app · store information
About this app
Privacy-focused secure calling, video, conferencing, messaging, and attachments
Screenshots
Scan history
Each row is an observed scan. Gaps between scans do not establish how long a finding existed.
| Scanned (UTC) | Build | Score | Grade |
|---|---|---|---|
| 2026-10-10 18:16 UTC | 6.15.1 | 98 | A |
| 2026-10-03 14:58 UTC | 6.15.1 | 98 | A |
Export & share
Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.
Coverage & gap matrix · Verify signed evidence
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Embed this grade
The badge reads the latest recorded grade each time it is loaded, and links back to the full report so a reader can see the build it covers and what the scan could not see.
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API users can request authenticated, scan-specific exports at /v1/scans/448473e3-b07a-4a0f-bd0c-07b533e74eb8/findings.sarif (also coverage.json and proof.json).
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