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Hand Talk Translator for ASL

Hand Talk · Build 7.10.0

br.com.handtalk
Static analysis completeScanned 2026-10-10 08:57 UTC

Static checks identify review items, not a guarantee of safety.

Overview

Review needed

1 high or critical finding category to review

Hand Talk Translator for ASL (br.com.handtalk) scored grade D, 41 out of 100, in a static scan of version 7.10.0 on 2026-10-10. It has 1 high or critical finding among 4 finding categories across 29 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.

Finding categories429 occurrences
High / critical1Category count
Tracking SDKs8Presence, not observed traffic
Assessment score41 / 100Grade D

Start with these findings

criticalFirebase Storage bucket reference — confirmed publicly readable6 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
6 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
1 historically verified occurrence at the recorded scan time. Current reachability is not established.
lowFirebase Realtime Database reference2 occurrences

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
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.
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.
View all 4 categories

Privacy

39 requested permissions · 4 flagged high-risk classes.

Review privacy signals →

Build & components

63 components recorded. Certificate parsing does not validate APK signature integrity.

Inspect build evidence →

Findings

4 categories · 29 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.

criticalFirebase Storage bucket reference — confirmed publicly readable6 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
6 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
1 historically verified occurrence at the recorded scan time. 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

6 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.

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lowFirebase Realtime Database reference2 occurrences

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
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
Pattern recorded; identifying value redacted.
Detector rule
firebase_db
Recorded file locations
  • resources.arsc

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.

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Search 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
classes3.dex
Recorded match
AIza•••••••• (21–40 chars, redacted)
Detector rule
google_api_key
Recorded file locations
  • classes3.dex

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.

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Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

lowGoogle Cloud Storage reference19 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
19 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
gcs_bucket
Recorded file locations
  • assets/index.android.bundle

19 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.

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Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Privacy signals

Capabilities and bundled software do not prove that data was collected or transmitted.

Requested permissions39
Flagged high-risk classes4
Detected SDKs8

Camera Microphone Storage Draw over other apps

Requested permission inventory (39)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_ADSERVICES_CUSTOM_AUDIENCE
  • android.permission.ACCESS_ADSERVICES_TOPICS
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.ACCESS_WIFI_STATE
  • android.permission.CAMERA
  • android.permission.FOREGROUND_SERVICE
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.READ_APP_BADGE
  • android.permission.READ_EXTERNAL_STORAGE
  • android.permission.READ_MEDIA_IMAGES
  • android.permission.RECORD_AUDIO
  • android.permission.SYSTEM_ALERT_WINDOW
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • br.com.handtalk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • com.anddoes.launcher.permission.UPDATE_COUNT
  • com.android.vending.BILLING
  • com.android.vending.CHECK_LICENSE
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • com.google.android.providers.gsf.permission.READ_GSERVICES
  • com.htc.launcher.permission.READ_SETTINGS
  • com.htc.launcher.permission.UPDATE_SHORTCUT
  • com.huawei.android.launcher.permission.CHANGE_BADGE
  • com.huawei.android.launcher.permission.READ_SETTINGS
  • com.huawei.android.launcher.permission.WRITE_SETTINGS
  • com.majeur.launcher.permission.UPDATE_BADGE
  • com.oppo.launcher.permission.READ_SETTINGS
  • com.oppo.launcher.permission.WRITE_SETTINGS
  • com.sec.android.provider.badge.permission.READ
  • com.sec.android.provider.badge.permission.WRITE
  • com.sonyericsson.home.permission.BROADCAST_BADGE
  • com.sonymobile.home.permission.PROVIDER_INSERT_BADGE
  • me.everything.badger.permission.BADGE_COUNT_READ
  • me.everything.badger.permission.BADGE_COUNT_WRITE

Data collection & flow (privacy signal, not part of the grade)

Data the app can access
Camera
Camera
Microphone
Microphone
Photos & files
StorageStorage (write)Photos
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEIHardware MAC address
Where it can go
Third parties present (5)
Google AdMobGoogle Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag ManagerMeta / Facebook SDK
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI +1 more) with 5 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
  • Camera, Microphone, 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)

Advertising
Google AdMob
Analytics
Google Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag ManagerMeta / Facebook SDK
Consent
Google UMP (consent)IAB TCF
Crash reporting
Google Crashlytics

Build & components

Scanned build 7.10.0. Store metadata may describe a newer release.

APK SHA-2563a17c05f1c02d24fd2cacdf37478bf6e19394867b4a7132b5cbbfc78dd79ba3c

Signing certificate (who signed this build — factual, not part of the grade)

Signer
Hand Talk Servicos LTDA self-signed
Scheme
V3V2
Key
RSA 2048-bit
Algorithm
sha256WithRSA
Validity
2013-07-25 → 2040-12-10
Cert SHA-256
84:61:4f:3b:68:e0:02:d1:04:e0:c9:ec:cf:47:62:64:52:b5:b4:f8:11:52:aa:90:4e:7e:1b:2e:fa:79:b9:9e

The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.

Signature integrity: not established by certificate parsing.

Component inventory

63 components. Advisory matching covers a curated set; no match is not proof that a component is vulnerability-free.

Bundled components and recorded advisory matches
ComponentVersionAdvisory matches
androidx.activity:activity1.5.1None recorded
androidx.annotation:annotation-experimental1.3.0None recorded
androidx.appcompat:appcompat1.4.1None recorded
androidx.appcompat:appcompat-resources1.4.1None recorded
androidx.arch.core:core-runtime2.1.0None recorded
androidx.asynclayoutinflater:asynclayoutinflater1.0.0None recorded
androidx.autofill:autofill1.1.0None recorded
androidx.browser:browser1.4.0None recorded
androidx.cardview:cardview1.0.0None recorded
androidx.coordinatorlayout:coordinatorlayout1.1.0None recorded
androidx.core:core1.9.0None recorded
androidx.core:core-ktx1.9.0None recorded
androidx.core:core-splashscreen1.0.0-beta01None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.0.0None recorded
androidx.datastore:datastore1.0.0None recorded
androidx.datastore:datastore-preferences1.0.0None recorded
androidx.documentfile:documentfile1.0.0None recorded
androidx.drawerlayout:drawerlayout1.0.0None recorded
androidx.emoji2:emoji21.0.0None recorded
androidx.emoji2:emoji2-views-helper1.0.0None recorded
androidx.exifinterface:exifinterface1.2.0None recorded
androidx.fragment:fragment1.5.7None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-ui1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.legacy:legacy-support-v41.0.0None recorded
androidx.lifecycle:lifecycle-livedata2.1.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.5.1None recorded
androidx.lifecycle:lifecycle-process2.4.0None recorded
androidx.lifecycle:lifecycle-runtime2.5.1None recorded
androidx.lifecycle:lifecycle-service2.1.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.5.1None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.5.1None recorded
androidx.loader:loader1.1.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.media:media1.6.0None recorded
androidx.palette:palette1.0.0None recorded
androidx.print:print1.0.0None recorded
androidx.privacysandbox.ads:ads-adservices1.0.0-beta05None recorded
androidx.privacysandbox.ads:ads-adservices-java1.0.0-beta05None recorded
androidx.recyclerview:recyclerview1.1.0None recorded
androidx.room:room-runtime2.2.5None recorded
androidx.savedstate:savedstate1.2.0None recorded
androidx.slidingpanelayout:slidingpanelayout1.0.0None recorded
androidx.sqlite:sqlite2.1.0None recorded
androidx.sqlite:sqlite-framework2.1.0None recorded
androidx.startup:startup-runtime1.0.0None recorded
androidx.swiperefreshlayout:swiperefreshlayout1.1.0None recorded
androidx.tracing:tracing1.1.0None recorded
androidx.transition:transition1.2.0None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager2:viewpager21.0.0None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.webkit:webkit1.4.0None recorded
androidx.work:work-runtime2.7.1None recorded
com.google.android.material:material1.1.0None recorded
com.squareup.okhttp3:okhttp4.9.3None recorded
kotlinx:coroutines_android1.7.3None recorded
kotlinx:coroutines_core1.7.3None recorded
kotlinx:coroutines_play_services1.7.3None recorded
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About this app · store information

About this app

Translate and learn signs in ASL, BSL and Libras for free with Hugo!

Content ratingEveryone
Download size92.2 MB
Privacy policyPublished →
Developer sitewww.handtalk.me/app

Screenshots

App screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshot

Scan history

Each row is an observed scan. Gaps between scans do not establish how long a finding existed.

Scanned (UTC)BuildScoreGrade
2026-10-10 08:57 UTC7.10.041D

View changes between the last two scans →

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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apk-scanner.com exposure grade
Markdown
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HTML
<a href="https://apk-scanner.com/app/br.com.handtalk"><img src="https://apk-scanner.com/app/br.com.handtalk/badge.svg" alt="apk-scanner.com exposure grade" height="20"></a>

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API users can request authenticated, scan-specific exports at /v1/scans/c299f547-3c4c-40a3-91b6-ae2a260346b5/findings.sarif (also coverage.json and proof.json).

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