オーディオブック (audiobook.jp) - 聞く読書
株式会社オトバンク · Build 2.169.0
Static checks identify review items, not a guarantee of safety.
Overview
1 high or critical finding category to review
オーディオブック (audiobook.jp) - 聞く読書 (jp.audiobook.app) scored grade F, 0 out of 100, in a static scan of version 2.169.0 on 2026-10-09. It has 1 high or critical finding among 6 finding categories across 14 occurrences. One finding was confirmed live: an anonymous request reached a backend the app references and it answered without authentication. No credential was used and no stored data was read. 8 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
criticalGoogle Cloud Storage reference — confirmed publicly readable3 occurrences
Interpretation & review guidance
A Google Cloud Storage reference. Normal for apps that use GCS; risky only if the bucket is publicly listable/readable (live-verified).
- Evidence
- 3 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 2 historically verified occurrences at the recorded scan time. Current reachability is not established.
lowAmazon S3 bucket reference4 occurrences
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
- 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.
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.
Build & components
98 components recorded. Certificate parsing does not validate APK signature integrity.
Inspect build evidence →Findings
6 categories · 14 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.
criticalGoogle Cloud Storage reference — confirmed publicly readable3 occurrences
Interpretation & review guidance
A Google Cloud Storage reference. Normal for apps that use GCS; risky only if the bucket is publicly listable/readable (live-verified).
- Evidence
- 3 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 2 historically verified occurrences at the recorded scan time. Current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
assets/index.android.bundle- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
gcs_bucket- Recorded file locations
assets/index.android.bundle
3 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.
lowAmazon S3 bucket reference4 occurrences
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
- 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
assets/index.android.bundle- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
s3_path_url- Recorded file locations
assets/index.android.bundle
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.
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.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.
lowFirebase Storage bucket reference4 occurrences
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
- 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
resources.arsc- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
firebase_storage_bucket- Recorded file locations
resources.arsc
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.
lowGoogle API key (client-shipped; restriction unverified)1 occurrence
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
- 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
AIza•••••••• (21–40 chars, redacted)- Detector rule
google_api_key- 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.
lowSentry DSN1 occurrence
Interpretation & review guidance
A Sentry DSN. These are client-side by design (embedded in apps to send crash reports), so presence is expected; it only lets someone send events to the project, not read data. Low severity — included for inventory.
- 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
assets/index.android.bundle- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
sentry_dsn- Recorded file locations
assets/index.android.bundle
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.
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.
Storage Draw over other apps
Requested permission inventory (38)
Data collection & flow (privacy signal, not part of the grade)
- Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI +1 more) with 6 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
- Photos & files data requested with third-party analytics/ad SDKs present.
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 (8 detected · privacy signal, not part of the grade)
Build & components
Scanned build 2.169.0. Store metadata may describe a newer release.
a56a34b5d07a0882f3e8ea9d70b2c4aaf996a23d77704c1dd407fd62bb57ac0fSigning certificate (who signed this build — factual, not part of the grade)
26:c8:eb:44:41:aa:e3:ba:16:2c:dc:37:e3:37:bf:99:dc:0b:9d:51:54:fa:14:eb:38:2c:dd:dd:f1:93:e8:c3The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.
Component inventory
98 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 | 1.9.0 | None recorded |
androidx.activity:activity-compose | 1.9.0 | None recorded |
androidx.activity:activity-ktx | 1.9.0 | None recorded |
androidx.annotation:annotation-experimental | 1.4.1 | None recorded |
androidx.appcompat:appcompat | 1.7.0 | None recorded |
androidx.appcompat:appcompat-resources | 1.7.0 | None recorded |
androidx.asynclayoutinflater:asynclayoutinflater | 1.0.0 | None recorded |
androidx.autofill:autofill | 1.1.0 | None recorded |
androidx.browser:browser | 1.6.0 | None recorded |
androidx.cardview:cardview | 1.0.0 | None recorded |
androidx.compose.animation:animation | 1.9.0 | None recorded |
androidx.compose.animation:animation-core | 1.9.0 | None recorded |
androidx.compose.foundation:foundation | 1.9.0 | None recorded |
androidx.compose.foundation:foundation-layout | 1.9.0 | None recorded |
androidx.compose.material:material | 1.0.0 | None recorded |
androidx.compose.material:material-icons-core | 1.0.0 | None recorded |
androidx.compose.material:material-ripple | 1.0.0 | None recorded |
androidx.compose.runtime:runtime | 1.9.0 | None recorded |
androidx.compose.runtime:runtime-annotation | 1.9.0 | None recorded |
androidx.compose.runtime:runtime-saveable | 1.9.0 | None recorded |
androidx.compose.ui:ui | 1.9.0 | None recorded |
androidx.compose.ui:ui-geometry | 1.9.0 | None recorded |
androidx.compose.ui:ui-graphics | 1.9.0 | None recorded |
androidx.compose.ui:ui-text | 1.9.0 | None recorded |
androidx.compose.ui:ui-tooling | 1.9.0 | None recorded |
androidx.compose.ui:ui-tooling-data | 1.9.0 | None recorded |
androidx.compose.ui:ui-tooling-preview | 1.9.0 | None recorded |
androidx.compose.ui:ui-unit | 1.9.0 | None recorded |
androidx.compose.ui:ui-util | 1.9.0 | None recorded |
androidx.coordinatorlayout:coordinatorlayout | 1.2.0 | None recorded |
androidx.core:core | 1.16.0 | None recorded |
androidx.core:core-ktx | 1.16.0 | None recorded |
androidx.core:core-splashscreen | 1.2.0-alpha02 | 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.databinding:viewbinding | 8.11.0 | None recorded |
androidx.datastore:datastore | 1.0.0 | None recorded |
androidx.datastore:datastore-preferences | 1.0.0 | None recorded |
androidx.documentfile:documentfile | 1.1.0 | None recorded |
androidx.drawerlayout:drawerlayout | 1.1.1 | None recorded |
androidx.dynamicanimation:dynamicanimation | 1.0.0 | None recorded |
androidx.emoji2:emoji2 | 1.4.0 | None recorded |
androidx.emoji2:emoji2-views-helper | 1.4.0 | None recorded |
androidx.exifinterface:exifinterface | 1.3.7 | None recorded |
androidx.fragment:fragment | 1.6.1 | None recorded |
androidx.fragment:fragment-ktx | 1.6.1 | None recorded |
androidx.graphics:graphics-path | 1.0.1 | 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-extensions | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-livedata | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core-ktx | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-process | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-runtime | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-runtime-compose | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-runtime-ktx | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-service | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-compose | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-ktx | 2.9.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-savedstate | 2.9.0 | None recorded |
androidx.loader:loader | 1.1.0 | None recorded |
androidx.localbroadcastmanager:localbroadcastmanager | 1.0.0 | None recorded |
androidx.media:media | 1.6.0 | None recorded |
androidx.navigation:navigation-common | 2.9.0 | None recorded |
androidx.navigation:navigation-compose | 2.9.0 | None recorded |
androidx.navigation:navigation-runtime | 2.9.0 | 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.profileinstaller:profileinstaller | 1.4.1 | None recorded |
androidx.recyclerview:recyclerview | 1.3.0 | None recorded |
androidx.savedstate:savedstate | 1.3.0 | None recorded |
androidx.savedstate:savedstate-compose | 1.3.0 | None recorded |
androidx.savedstate:savedstate-ktx | 1.3.0 | None recorded |
androidx.slidingpanelayout:slidingpanelayout | 1.0.0 | None recorded |
androidx.startup:startup-runtime | 1.1.1 | None recorded |
androidx.swiperefreshlayout:swiperefreshlayout | 1.1.0 | 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 | 1.0.0 | None recorded |
androidx.viewpager:viewpager | 1.0.0 | None recorded |
androidx.webkit:webkit | 1.14.0 | None recorded |
com.google.android.material:material | 1.12.0 | None recorded |
com.google.dagger:dagger | 2.43.2 | None recorded |
com.squareup.okhttp3:okhttp | 4.12.0 | 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
If you want to listen to audiobooks, you can listen to "audiobook.jp®" podcasts, English, business books, best-selling novels, and more.
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 |
|---|---|---|---|
| 2026-10-09 04:02 UTC | 2.169.0 | 0 | F |
| 2026-10-02 03:26 UTC | 2.169.0 | 0 | F |
| 2026-09-25 03:23 UTC | 2.169.0 | 88 | B |
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/889c4215-846b-41d0-9d58-2f9ec886e897/findings.sarif (also coverage.json and proof.json).
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