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JusTalk Kids - Safe Messenger
com.justalk.kids.android · Build 2.15.1
Analysis: complete. Static analysis completed for this build. A grade is not a guarantee of safety. Historical verification does not establish current reachability.
- Grade / score
- D · 51/100
- Finding categories
- 10
- Occurrences
- 37
- Scanned
- 2026-10-12T17:48:28.869Z
- Document issued
- 2026-10-13T15:53:05.604Z
- Historical verifications
- 0
Finding evidence
Open a category to review its occurrences. Printing includes all categories and occurrences.
AWS access key ID · high · 2 occurrences
Remove the hard-coded credential from the app package, rotate/revoke it immediately, and move the secret to a backend the app calls with per-user authentication.
CWE-798 · MASVS-STORAGE-1
AKIA•••••••• (≤20 chars, redacted)AKIA•••••••• (≤20 chars, redacted)
Application data is backup-enabled · info · 1 occurrence
Backup is on by default on Android; this manifest states it explicitly. If the app stores sensitive local data, define dataExtractionRules/fullBackupContent to exclude it, or set android:allowBackup=false.
CWE-530 · CWE-312 · MASVS-STORAGE-1 · MASVS-STORAGE-2
android:allowBackup="true"
Amazon S3 bucket reference · low · 1 occurrence
Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open.
CWE-200 · CWE-284 · MASVS-STORAGE-2
http://████.amazonaws.com/███
Firebase Realtime Database reference · low · 1 occurrence
Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open.
CWE-200 · CWE-284 · MASVS-STORAGE-2
https://█████████████.firebaseio.com/███
Google API key (client-shipped; restriction unverified) · low · 1 occurrence
Restrict the API key (application + API restrictions in Google Cloud Console); a client-shipped key is public, so restriction is the control.
CWE-798 · MASVS-STORAGE-1
AIza•••••••• (21–40 chars, redacted)
Firebase Storage bucket reference · low · 3 occurrences
Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open.
CWE-200 · CWE-284 · MASVS-STORAGE-2
████████████████████████████████████
Background location access with advertising SDKs present · low · 1 occurrence
Justify background location; request foreground-only where possible and disclose the use in the Play Data Safety form.
CWE-359 · MASVS-PRIVACY-1
background location + ad SDKs
Data Safety label omits Location · low · 1 occurrence
Update the Play Data Safety form to declare the observed data category, or remove the capability if the data is not actually collected.
CWE-359 · MASVS-PRIVACY-3
app can access location (Precise location); not in the declaration
Alibaba Cloud OSS bucket reference · low · 25 occurrences
Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open.
CWE-200 · CWE-284 · MASVS-STORAGE-2
https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███https://███████.oss-us-west-1.aliyuncs.com/███
Short signing key (RSA 1024-bit) · medium · 1 occurrence
Use an RSA key of at least 2048 bits or an EC P-256 key for signing.
CWE-326 · MASVS-CRYPTO-1
RSA-1024
Control coverage
Mapped static evidence does not establish a control pass. Manual assessment remains separate.
| Control | Requirement | Recorded status |
|---|---|---|
| MASVS-STORAGE-1 | The app securely stores sensitive data. | Review signal |
| MASVS-STORAGE-2 | The app prevents leakage of sensitive data. | Review signal |
| MASVS-CRYPTO-1 | The app employs current strong cryptography and uses it according to best practices. | Review signal |
| MASVS-CRYPTO-2 | The app performs key management according to best practices. | No static findings · not a pass |
| MASVS-AUTH-1 | The app uses secure authentication and authorization protocols. | Manual assessment |
| MASVS-AUTH-2 | The app performs local authentication securely. | Manual assessment |
| MASVS-AUTH-3 | The app secures sensitive operations with additional authentication. | Manual assessment |
| MASVS-NETWORK-1 | The app secures all network traffic according to current best practices. | No static findings · not a pass |
| MASVS-NETWORK-2 | The app verifies the identity of the remote endpoint (e.g. certificate pinning). | No static findings · not a pass |
| MASVS-PLATFORM-1 | The app uses IPC mechanisms securely. | No static findings · not a pass |
| MASVS-PLATFORM-2 | The app uses WebViews securely. | No static findings · not a pass |
| MASVS-PLATFORM-3 | The app uses the user interface securely. | Manual assessment |
| MASVS-CODE-1 | The app requires an up-to-date platform version. | No static findings · not a pass |
| MASVS-CODE-2 | The app has a mechanism for enforcing updates. | Manual assessment |
| MASVS-CODE-3 | The app only uses software components without known vulnerabilities. | No static findings · not a pass |
| MASVS-CODE-4 | The app validates and sanitizes all untrusted inputs and follows secure-coding practice. | No static findings · not a pass |
| MASVS-RESILIENCE-1 | The app validates the integrity of the platform. | Manual assessment |
| MASVS-RESILIENCE-2 | The app implements anti-tampering mechanisms. | Manual assessment |
| MASVS-RESILIENCE-3 | The app implements anti-static-analysis mechanisms. | Manual assessment |
| MASVS-RESILIENCE-4 | The app implements anti-dynamic-analysis techniques. | Manual assessment |
| MASVS-PRIVACY-1 | The app minimizes access to sensitive data and resources. | Review signal |
| MASVS-PRIVACY-2 | The app prevents identification of the user. | No static findings · not a pass |
| MASVS-PRIVACY-3 | The app is transparent about data collection and usage. | Review signal |
| MASVS-PRIVACY-4 | The app offers user control over their data. | Manual assessment |
Build identity and signature
- Scan ID
- 5f67ba6e-8d8c-479a-90f3-660dcc6c0a25
- APK SHA-256
316b03da9c629582a9698e6317fff252ccb29c7bc9dd86613216506e68b172a6- Capsule SHA-256
384172059ee25095a7c0373ac26d9620a19a6757368b5571cf31ac6c147883ea- Signing key
- IE6LeZNX4dAAPLGr
Verify the signed JSON at apk-scanner.com/verify. This printed view is a presentation of the signed record; the JSON is the verification artifact.