Defense legend 4 HD: Sci-fi TD
JoyUp · Build 5.1
Static checks identify review items, not a guarantee of safety.
Overview
4 finding categories to review
Defense legend 4 HD: Sci-fi TD (com.Gcenter.Defenselegend4.HD.TowerDefense.TD) scored grade A, 96 out of 100, in a static scan of version 5.1 on 2026-09-25. It has no high or critical findings, and 4 lower-severity finding categories across 5 occurrences. 7 tracking SDKs are present in the package, which describes what ships, not what runs or what it sends. 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
lowExported content provider without permission (third-party library artifact, shared across 402 unrelated developers)1 occurrence
Interpretation & review guidance
An exported content provider declares no permission. Other apps on the device may reach it — verify it enforces access control internally; this flags the attack surface, not a confirmed leak.
- 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.
lowFirebase Realtime Database reference1 occurrence
Interpretation & review guidance
A Firebase Realtime Database URL. Nearly every app that uses Firebase ships one. It's only an exposure if the database rules are world-readable — that's what live verification checks.
- 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.
lowFirebase Storage bucket reference1 occurrence
Interpretation & review guidance
A Firebase Cloud Storage bucket reference (the default <project>.appspot.com). Storing user files here is normal — it's only an exposure if the Storage security rules allow public read/list, which live verification tests.
- 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.
Build & components
47 components recorded. Certificate parsing does not validate APK signature integrity.
Inspect build evidence →Findings
4 categories · 5 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.
lowExported content provider without permission (third-party library artifact, shared across 402 unrelated developers)1 occurrence
Interpretation & review guidance
An exported content provider declares no permission. Other apps on the device may reach it — verify it enforces access control internally; this flags the attack surface, not a confirmed leak.
- 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
- Parsed app configuration
- Representative location
AndroidManifest.xml:com.facebook.FacebookContentProvider- Recorded match
FacebookContentProvider (exported, no permission)- Detector rule
manifest- Recorded file locations
AndroidManifest.xml:com.facebook.FacebookContentProvider
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.
lowFirebase Realtime Database reference1 occurrence
Interpretation & review guidance
A Firebase Realtime Database URL. Nearly every app that uses Firebase ships one. It's only an exposure if the database rules are world-readable — that's what live verification checks.
- 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
firebase_db- Recorded file locations
resources.arscassets/google-services-desktop.json
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.
lowFirebase Storage bucket reference1 occurrence
Interpretation & review guidance
A Firebase Cloud Storage bucket reference (the default <project>.appspot.com). Storing user files here is normal — it's only an exposure if the Storage security rules allow public read/list, which live verification tests.
- 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
firebase_storage_bucket- Recorded file locations
resources.arscassets/google-services-desktop.json
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.
lowGoogle API key (client-shipped; restriction unverified)2 occurrences
Interpretation & review guidance
Android apps are designed to ship Google API keys in the client; Google restricts them by app signing certificate + enabled API. This is only a problem if the key is left unrestricted — presence alone is expected, not an exposure.
- Evidence
- 2 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
resources.arsc- Recorded match
AIza•••••••• (21–40 chars, redacted)- Detector rule
google_api_key- Recorded file locations
resources.arscassets/google-services-desktop.json
2 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.
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Privacy signals
Capabilities and bundled software do not prove that data was collected or transmitted.
Requested permission inventory (13)
Data collection & flow (privacy signal, not part of the grade)
- Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI) with 6 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
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.
Trackers & SDKs (7 detected · privacy signal, not part of the grade)
Build & components
Scanned build 5.1. Store metadata may describe a newer release.
818cbf78a32c4e3487e01dab7cf41d9792d9ece3c9b5d0d21ca67420e26ba0b2Signing certificate (who signed this build — factual, not part of the grade)
23:94:a4:65:ed:c8:5c:95:01:70:32:e5:69:15:23:54:dd:47:ed:b5:33:96:4f:0d:73:84:fa:58:33:82:a0:b1The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.
Component inventory
47 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 | 1.2.3 | None recorded |
androidx.annotation:annotation-experimental | 1.3.0 | None recorded |
androidx.appcompat:appcompat | 1.1.0 | None recorded |
androidx.appcompat:appcompat-resources | 1.1.0 | None recorded |
androidx.arch.core:core-runtime | 2.1.0 | None recorded |
androidx.asynclayoutinflater:asynclayoutinflater | 1.0.0 | None recorded |
androidx.browser:browser | 1.4.0 | None recorded |
androidx.cardview:cardview | 1.0.0 | None recorded |
androidx.coordinatorlayout:coordinatorlayout | 1.0.0 | None recorded |
androidx.core:core | 1.9.0 | None recorded |
androidx.core:core-ktx | 1.9.0 | None recorded |
androidx.credentials:credentials | 1.2.0-rc01 | None recorded |
androidx.credentials:credentials-play-services-auth | 1.2.0-rc01 | None recorded |
androidx.cursoradapter:cursoradapter | 1.0.0 | None recorded |
androidx.customview:customview | 1.0.0 | None recorded |
androidx.datastore:datastore | 1.1.3 | None recorded |
androidx.datastore:datastore-core | 1.1.3 | None recorded |
androidx.datastore:datastore-preferences | 1.1.3 | None recorded |
androidx.documentfile:documentfile | 1.0.0 | None recorded |
androidx.drawerlayout:drawerlayout | 1.0.0 | None recorded |
androidx.fragment:fragment | 1.3.0 | 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-v4 | 1.0.0 | None recorded |
androidx.lifecycle:lifecycle-livedata | 2.0.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core | 2.3.1 | None recorded |
androidx.lifecycle:lifecycle-runtime | 2.3.1 | None recorded |
androidx.lifecycle:lifecycle-viewmodel | 2.3.1 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-savedstate | 2.3.1 | 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.print:print | 1.0.0 | None recorded |
androidx.privacysandbox.ads:ads-adservices | 1.1.0-beta11 | None recorded |
androidx.privacysandbox.ads:ads-adservices-java | 1.1.0-beta11 | None recorded |
androidx.savedstate:savedstate | 1.1.0 | None recorded |
androidx.slidingpanelayout:slidingpanelayout | 1.0.0 | None recorded |
androidx.swiperefreshlayout:swiperefreshlayout | 1.0.0 | None recorded |
androidx.tracing:tracing | 1.0.0 | 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.viewpager:viewpager | 1.0.0 | None recorded |
kotlinx:coroutines_android | 1.9.0 | None recorded |
kotlinx:coroutines_core | 1.9.0 | None recorded |
kotlinx:coroutines_play_services | 1.9.0 | None recorded |
About this app · store information
About this app
Protect the world against the invasion of the Dark Force.
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 |
|---|---|---|---|
| 2026-09-25 07:28 UTC | 5.1 | 96 | A |
Export & share
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Coverage & gap matrix · Verify signed evidence
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