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Firefox Fast & Private Browser

Mozilla · Build 157.0.1

org.mozilla.firefox
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Static analysis completeScanned 2026-10-11 03:48 UTC

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

Overview

Analysis recorded

6 finding categories to review

Firefox Fast & Private Browser (org.mozilla.firefox) scored grade B, 84 out of 100, in a static scan of version 157.0.1 on 2026-10-11. It has no high or critical findings, and 6 lower-severity finding categories across 26 occurrences. 5 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 categories626 occurrences
High / critical0Category count
Tracking SDKs5Presence, not observed traffic
Assessment score84 / 100Grade B

Start with these findings

mediumCleartext (HTTP) traffic permitted1 occurrence

Interpretation & review guidance

The manifest permits cleartext (HTTP) traffic. Data sent over plain HTTP can be read or tampered with on the network; modern apps should require HTTPS.

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.
Open in all findingsRequest a correction
mediumExported content provider without permission1 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.
Open in all findingsRequest a correction
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.
Open in all findingsRequest a correction
View all 6 categories

Privacy

33 requested permissions · 5 flagged high-risk classes.

Review privacy signals →

Build & components

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

Inspect build evidence →
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Findings

6 categories · 26 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.

mediumCleartext (HTTP) traffic permitted1 occurrence

Interpretation & review guidance

The manifest permits cleartext (HTTP) traffic. Data sent over plain HTTP can be read or tampered with on the network; modern apps should require HTTPS.

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
Recorded match
android:usesCleartextTraffic="true"
Detector rule
manifest
Recorded file locations
  • AndroidManifest.xml

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.

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Link to categoryRequest a correction
mediumExported content provider without permission1 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:org.mozilla.gecko.GeckoClipboardContentProvider
Recorded match
GeckoClipboardContentProvider (exported, no permission)
Detector rule
manifest
Recorded file locations
  • AndroidManifest.xml:org.mozilla.gecko.GeckoClipboardContentProvider

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.

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Link to categoryRequest a correction
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.

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

Link to categoryRequest a correction
lowFirebase Storage bucket reference21 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
21 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

21 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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Link to categoryRequest a correction
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.

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

Link to categoryRequest a correction
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
classes2.dex
Recorded match
Pattern recorded; identifying value redacted.
Detector rule
sentry_dsn
Recorded file locations
  • classes2.dex

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.

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

Link to categoryRequest a correction

Privacy signals

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

Requested permissions33
Flagged high-risk classes5
Detected SDKs5

Precise location Approx. location Camera Microphone List installed apps

Requested permission inventory (33)
  • android.permission.ACCESS_COARSE_LOCATION
  • android.permission.ACCESS_FINE_LOCATION
  • android.permission.ACCESS_LOCAL_NETWORK
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.CAMERA
  • android.permission.CREDENTIAL_MANAGER_QUERY_CANDIDATE_CREDENTIALS
  • android.permission.CREDENTIAL_MANAGER_SET_ORIGIN
  • android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_DATA_SYNC
  • android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK
  • android.permission.FOREGROUND_SERVICE_SPECIAL_USE
  • android.permission.INTERNET
  • android.permission.MODIFY_AUDIO_SETTINGS
  • android.permission.POST_NOTIFICATIONS
  • android.permission.QUERY_ALL_PACKAGES
  • android.permission.READ_MEDIA_AUDIO
  • android.permission.READ_MEDIA_VISUAL_USER_SELECTED
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.REQUEST_DELETE_PACKAGES
  • android.permission.REQUEST_INSTALL_PACKAGES
  • android.permission.USE_BIOMETRIC
  • android.permission.USE_FINGERPRINT
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • com.adjust.preinstall.READ_PERMISSION
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • org.mozilla.firefox.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • org.mozilla.firefox.permission.PROFILER_INTERNAL
  • org.mozilla.firefox.permission.RECEIVE_DOWNLOAD_BROADCAST

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

Data the app can access
Camera
Camera
Location
Approximate locationPrecise location
Microphone
Microphone
Photos & files
StorageStorage (write)Audio files
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEI
Where it can go
Third parties present (4)
Google AdMobGoogle Analytics for FirebaseGoogle Firebase AnalyticsAdjust
  • Approximate location, Precise location requested while 2 ad/attribution SDK(s) are present (Google AdMob, Adjust) — location commonly feeds ad targeting.
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI) with 4 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 (5 detected · privacy signal, not part of the grade)

Advertising
Google AdMob
Analytics
Google Analytics for FirebaseGoogle Firebase Analytics
Attribution
Adjust
Crash reporting
Sentry

Build & components

Scanned build 157.0.1. Store metadata may describe a newer release.

APK SHA-25629b5e1f8f2537f6957a8e0519cf43852dbda915fa241468dcda98f594244b400

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

Signer
Mozilla Corporation self-signed
Scheme
V3V2
Key
RSA 2048-bit
Algorithm
sha1WithRSA
Validity
2010-08-23 → 2038-01-08
Cert SHA-256
a7:8b:62:a5:16:5b:44:94:b2:fe:ad:9e:76:a2:80:d2:2d:93:7f:ee:62:51:ae:ce:59:94:46:b2:ea:31:9b:04

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

119 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:activity1.13.0None recorded
androidx.activity:activity-compose1.13.0None recorded
androidx.activity:activity-ktx1.13.0None recorded
androidx.annotation:annotation-experimental1.6.0None recorded
androidx.appcompat:appcompat1.8.0None recorded
androidx.appcompat:appcompat-resources1.8.0None recorded
androidx.autofill:autofill1.3.0None recorded
androidx.biometric:biometric1.1.0None recorded
androidx.browser:browser1.10.0None recorded
androidx.cardview:cardview1.0.0None recorded
androidx.compose.animation:animation1.12.0None recorded
androidx.compose.animation:animation-core1.12.0None recorded
androidx.compose.foundation:foundation1.12.0None recorded
androidx.compose.foundation:foundation-layout1.12.0None recorded
androidx.compose.material3.adaptive:adaptive1.3.0None recorded
androidx.compose.material3.adaptive:adaptive-layout1.3.0None recorded
androidx.compose.material3.adaptive:adaptive-navigation1.3.0None recorded
androidx.compose.material3:material31.4.0None recorded
androidx.compose.material3:material3-adaptive-navigation-suite1.4.0None recorded
androidx.compose.material3:material3-window-size-class1.4.0None recorded
androidx.compose.material:material-icons-core1.7.8None recorded
androidx.compose.material:material-ripple1.12.0None recorded
androidx.compose.runtime:runtime1.12.0None recorded
androidx.compose.runtime:runtime-annotation1.12.0None recorded
androidx.compose.runtime:runtime-retain1.12.0None recorded
androidx.compose.runtime:runtime-saveable1.12.0None recorded
androidx.compose.ui:ui1.12.0None recorded
androidx.compose.ui:ui-geometry1.12.0None recorded
androidx.compose.ui:ui-graphics1.12.0None recorded
androidx.compose.ui:ui-text1.12.0None recorded
androidx.compose.ui:ui-tooling-preview1.12.0None recorded
androidx.compose.ui:ui-unit1.12.0None recorded
androidx.compose.ui:ui-util1.12.0None recorded
androidx.constraintlayout:constraintlayout2.2.2None recorded
androidx.coordinatorlayout:coordinatorlayout1.3.0None recorded
androidx.core:core1.19.0None recorded
androidx.core:core-ktx1.19.0None recorded
androidx.core:core-splashscreen1.2.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.2.0None recorded
androidx.customview:customview-poolingcontainer1.0.0None recorded
androidx.databinding:viewbinding9.4.0None recorded
androidx.datastore:datastore1.2.1None recorded
androidx.datastore:datastore-core1.2.1None recorded
androidx.datastore:datastore-preferences1.2.1None recorded
androidx.datastore:datastore-preferences-core1.2.1None recorded
androidx.documentfile:documentfile1.1.0None recorded
androidx.dynamicanimation:dynamicanimation1.1.0None recorded
androidx.emoji2:emoji21.6.0None recorded
androidx.emoji2:emoji2-views-helper1.6.0None recorded
androidx.exifinterface:exifinterface1.4.2None recorded
androidx.fragment:fragment1.9.0None recorded
androidx.fragment:fragment-compose1.9.0None recorded
androidx.fragment:fragment-ktx1.9.0None recorded
androidx.graphics:graphics-path1.0.1None recorded
androidx.graphics:graphics-shapes1.0.1None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.lifecycle:lifecycle-livedata2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-process2.11.0None recorded
androidx.lifecycle:lifecycle-runtime2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-compose2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-testing2.11.0None recorded
androidx.lifecycle:lifecycle-service2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-compose2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.11.0None recorded
androidx.loader:loader1.0.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.media:media1.7.1None recorded
androidx.navigation3:navigation3-runtime1.1.7None recorded
androidx.navigation3:navigation3-ui1.1.7None recorded
androidx.navigation:navigation-common2.10.0None recorded
androidx.navigation:navigation-compose2.10.0None recorded
androidx.navigation:navigation-fragment2.10.0None recorded
androidx.navigation:navigation-runtime2.10.0None recorded
androidx.navigation:navigation-ui2.10.0None recorded
androidx.navigationevent:navigationevent1.1.2None recorded
androidx.navigationevent:navigationevent-compose1.1.2None recorded
androidx.paging:paging-common3.5.1None recorded
androidx.paging:paging-runtime3.5.1None recorded
androidx.palette:palette1.0.0None recorded
androidx.palette:palette-ktx1.0.0None recorded
androidx.preference:preference1.2.1None recorded
androidx.print:print1.0.0None recorded
androidx.profileinstaller:profileinstaller1.4.1None recorded
androidx.recyclerview:recyclerview1.4.0None recorded
androidx.room:room-ktx2.8.4None recorded
androidx.room:room-runtime2.8.4None recorded
androidx.savedstate:savedstate1.5.0None recorded
androidx.savedstate:savedstate-compose1.5.0None recorded
androidx.savedstate:savedstate-ktx1.5.0None recorded
androidx.slidingpanelayout:slidingpanelayout1.2.0None recorded
androidx.sqlite:sqlite2.6.2None recorded
androidx.sqlite:sqlite-framework2.6.2None recorded
androidx.startup:startup-runtime1.2.0None recorded
androidx.swiperefreshlayout:swiperefreshlayout1.2.0None recorded
androidx.tracing:tracing2.0.0None recorded
androidx.tracing:tracing-ktx2.0.0None recorded
androidx.transition:transition1.7.1None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager2:viewpager21.1.0None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.window:window1.5.1None recorded
androidx.window:window-core1.5.1None recorded
androidx.work:work-runtime2.11.2None recorded
androidx.work:work-runtime-ktx2.11.2None recorded
com.google.android.material:material1.14.0None recorded
kotlinx:coroutines_android1.11.0None recorded
kotlinx:coroutines_core1.11.0None recorded
kotlinx:coroutines_play_services1.11.0None recorded
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About this app · store information

About this app

Private by default. Less tracking. Peace of mind built in.

Content ratingEveryone
Download size255.9 MB
Privacy policyPublished →

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
2026-10-11 03:48 UTC157.0.184B
2026-10-04 03:27 UTC157.084B
2026-09-27 03:26 UTC156.0.178B
2026-09-19 09:05 UTC156.078B
2026-09-02 10:08 UTC155.091A
2026-08-31 11:01 UTCcrawltest91A
2026-08-30 15:25 UTC154.0.192A
2026-08-30 10:03 UTCuploaded98A
2026-08-30 09:02 UTCuploaded98A

View changes between the last two scans →

Export & share

Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.

SARIFFindings CSVCoverage JSONSigned evidenceSBOM

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.

apk-scanner.com exposure grade
Markdown
[![apk-scanner.com exposure grade](https://apk-scanner.com/app/org.mozilla.firefox/badge.svg)](https://apk-scanner.com/app/org.mozilla.firefox)
HTML
<a href="https://apk-scanner.com/app/org.mozilla.firefox"><img src="https://apk-scanner.com/app/org.mozilla.firefox/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/91f534de-ee51-4799-b9c3-a1fc8e702d9e/findings.sarif (also coverage.json and proof.json).

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