{ "capsule": { "schema": "apk-scanner.proof/v2", "issuer": "apk-scanner.com", "issued_at": "2026-10-14T04:16:02.993Z", "app": { "app_id": "com.belugaedu.amgigorae", "title": "암기고래: 말해주는 단어장, 나만의 단어, 보카, 회화", "version": "6.2.5" }, "analysis": { "issues": [], "stages": { "pii": "complete", "sbom": "complete", "signing": "certificate_parsed", "strings": "complete", "manifest": "complete" }, "status": "complete", "grading": { "policy": "static-coverage-v1", "blockers": [], "eligible": true }, "timings_ms": { "total": 17563.266, "harvest": 5098.601999999995, "detectors": 9861.950000000046 }, "bytes_total": 101290628, "bytes_scanned": 101290628, "bytes_skipped": 0, "files_processed": 5540, "coverage_version": 2, "string_encodings": [ "ascii", "utf16le" ], "signature_validation": "not_performed" }, "provenance": { "mode": "static", "artifacts": [ { "name": "base.apk", "sha256": "77bc6dbffe2e7de684c3ae4409d0446e09b4cf5ec3db7101455b88d1f1d343d5" }, { "name": "config.arm64_v8a.apk", "sha256": "1a6a090d5c301698db282c47f37f60ea0efebf8fdeab9415e44496f53b19efc4" }, { "name": "config.en.apk", "sha256": "6cb06c087d630d68d4a520cefcca0bb82b82527dc52d6a1f2cd96790494afa95" }, { "name": "config.es.apk", "sha256": "3ba48aab137042bb920b3067ccff41746042c7bc0663d35f2ccbf3f96d8da6c3" }, { "name": "config.xxhdpi.apk", "sha256": "e651d3b757ec0f43556cdc3c8dda3835ed790f193fa40c4edaa1c61e8745073c" } ], "ruleset_sha256": "3bb79cc3710b0fb021feaa322578f4cffe08396a97c51b34df092b5a05891d5e" }, "apk_sha256": "77bc6dbffe2e7de684c3ae4409d0446e09b4cf5ec3db7101455b88d1f1d343d5", "scan": { "scan_id": "d73b5a65-ed0a-40e7-be72-0f2023e400b3", "scanned_at": "2026-10-08T15:08:39.053Z", "grade": "C", "score": 73 }, "apk_signer": { "scheme": "v3", "subject_o": "valco", "subject_cn": "valco", "sha256": "80f82b131de26d2d49e3353f81039908a9e3e5b50451546ca68e99e0beebfcfb", "not_after": "2065-05-19T08:36:28+00:00" }, "counts": { "critical": 0, "high": 1, "medium": 1, "low": 3, "info": 1 }, "findings": [ { "finding_type": 6, "severity": "high", "title": "Private key material", "redacted_display": "-----BEGIN PRIVATE KEY----- (redacted)", "fingerprint": "3f46d2fc717b3cf3245dd82276832bca033d0d9cf4197392d1a3bf832befec69", "verified": false, "cwe": [ "CWE-321" ], "masvs": [ "MASVS-CRYPTO-2" ], "remediation": "Never ship private-key material in a client. Revoke/rotate the compromised key and hold it server-side or in a hardware-backed store." }, { "finding_type": 37, "severity": "info", "title": "Application data is backup-enabled", "redacted_display": "android:allowBackup=\"true\"", "fingerprint": "68d134f0bcd98a9559d6dd5275f80a3928e4a6490ac4a0f1bd16f87683bd49f8", "verified": false, "cwe": [ "CWE-530", "CWE-312" ], "masvs": [ "MASVS-STORAGE-1", "MASVS-STORAGE-2" ], "remediation": "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." }, { "finding_type": 2, "severity": "low", "title": "Firebase Realtime Database reference", "redacted_display": "https://█████████████████████████.firebaseio.com/███", "fingerprint": "13d05924bc0642a963c3a49455e8143aab421e6b7595e9a980a1830092157a05", "verified": false, "cwe": [ "CWE-200", "CWE-284" ], "masvs": [ "MASVS-STORAGE-2" ], "remediation": "Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open." }, { "finding_type": 20, "severity": "low", "title": "Google API key (client-shipped; restriction unverified)", "redacted_display": "AIza•••••••• (21–40 chars, redacted)", "fingerprint": "08fe86f734b59e4afe7213e4bd82209e5d03ba4863de23efee317cfec7d04df4", "verified": false, "cwe": [ "CWE-798" ], "masvs": [ "MASVS-STORAGE-1" ], "remediation": "Restrict the API key (application + API restrictions in Google Cloud Console); a client-shipped key is public, so restriction is the control." }, { "finding_type": 53, "severity": "low", "title": "Firebase Storage bucket reference", "redacted_display": "████████████", "fingerprint": "5979cf8fb638d5d9b073a903c083274c3bb415ee4b4bf6f26ffe0d949377c2a1", "verified": false, "cwe": [ "CWE-200", "CWE-284" ], "masvs": [ "MASVS-STORAGE-2" ], "remediation": "Confirm the bucket/database denies anonymous read (enable auth / storage rules / RLS), then audit its contents for data already exposed while it was open." }, { "finding_type": 57, "severity": "medium", "title": "Short signing key (RSA 1024-bit)", "redacted_display": "RSA-1024", "fingerprint": "eff7d2f7607ae274d531546d1e828faf234bca919325efac0bbe80b2f250d041", "verified": false, "cwe": [ "CWE-326" ], "masvs": [ "MASVS-CRYPTO-1" ], "remediation": "Use an RSA key of at least 2048 bits or an EC P-256 key for signing." } ], "live_verification": { "verified_count": 0, "items": [] }, "trackers_count": 7, "pii": { "sources": 4, "identifiers": [ "Advertising ID (AAID)", "Android ID", "Device ID / IMEI", "Hardware MAC address" ], "destinations": 5 }, "sbom": { "component_count": 81, "vuln_count": 0, "components": [ { "name": "androidx.activity:activity", "version": "1.9.0", "cves": [] }, { "name": "androidx.activity:activity-ktx", "version": "1.9.0", "cves": [] }, { "name": "androidx.annotation:annotation-experimental", "version": "1.4.1", "cves": [] }, { "name": "androidx.appcompat:appcompat", "version": "1.8.0", "cves": [] }, { "name": "androidx.appcompat:appcompat-resources", "version": "1.8.0", "cves": [] }, { "name": "androidx.asynclayoutinflater:asynclayoutinflater", "version": "1.0.0", "cves": [] }, { "name": "androidx.biometric:biometric", "version": "1.1.0", "cves": [] }, { "name": "androidx.browser:browser", "version": "1.10.0", "cves": [] }, { "name": "androidx.cardview:cardview", "version": "1.0.0", "cves": [] }, { "name": "androidx.constraintlayout:constraintlayout", "version": "2.2.1", "cves": [] }, { "name": "androidx.coordinatorlayout:coordinatorlayout", "version": "1.1.0", "cves": [] }, { "name": "androidx.core:core", "version": "1.16.0", "cves": [] }, { "name": "androidx.core:core-ktx", "version": "1.16.0", "cves": [] }, { "name": "androidx.core:core-viewtree", "version": "1.0.0", "cves": [] }, { "name": "androidx.credentials:credentials", "version": "1.6.0", "cves": [] }, { "name": "androidx.credentials:credentials-play-services-auth", "version": "1.6.0", "cves": [] }, { "name": "androidx.cursoradapter:cursoradapter", "version": "1.0.0", "cves": [] }, { "name": "androidx.customview:customview", "version": "1.2.0", "cves": [] }, { "name": "androidx.customview:customview-poolingcontainer", "version": "1.0.0", "cves": [] }, { "name": "androidx.databinding:baseAdapters", "version": "9.4.1", "cves": [] }, { "name": "androidx.databinding:databindingKtx", "version": "9.4.1", "cves": [] }, { "name": "androidx.databinding:library", "version": "9.4.1", "cves": [] }, { "name": "androidx.databinding:viewbinding", "version": "9.4.1", "cves": [] }, { "name": "androidx.datastore:datastore", "version": "1.1.7", "cves": [] }, { "name": "androidx.datastore:datastore-core", "version": "1.1.7", "cves": [] }, { "name": "androidx.datastore:datastore-preferences", "version": "1.1.7", "cves": [] }, { "name": "androidx.datastore:datastore-preferences-core", "version": "1.1.7", "cves": [] }, { "name": "androidx.documentfile:documentfile", "version": "1.1.0", "cves": [] }, { "name": "androidx.drawerlayout:drawerlayout", "version": "1.1.1", "cves": [] }, { "name": "androidx.dynamicanimation:dynamicanimation", "version": "1.1.0", "cves": [] }, { "name": "androidx.emoji2:emoji2", "version": "1.3.0", "cves": [] }, { "name": "androidx.emoji2:emoji2-views-helper", "version": "1.3.0", "cves": [] }, { "name": "androidx.exifinterface:exifinterface", "version": "1.3.6", "cves": [] }, { "name": "androidx.fragment:fragment", "version": "1.5.7", "cves": [] }, { "name": "androidx.fragment:fragment-ktx", "version": "1.3.6", "cves": [] }, { "name": "androidx.graphics:graphics-shapes", "version": "1.0.1", "cves": [] }, { "name": "androidx.interpolator:interpolator", "version": "1.0.0", "cves": [] }, { "name": "androidx.legacy:legacy-support-core-ui", "version": "1.0.0", "cves": [] }, { "name": "androidx.legacy:legacy-support-core-utils", "version": "1.0.0", "cves": [] }, { "name": "androidx.legacy:legacy-support-v4", "version": "1.0.0", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-livedata", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-livedata-core", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-livedata-core-ktx", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-process", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-runtime", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-runtime-ktx", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-service", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-viewmodel", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-viewmodel-ktx", "version": "2.9.3", "cves": [] }, { "name": "androidx.lifecycle:lifecycle-viewmodel-savedstate", "version": "2.9.3", "cves": [] }, { "name": "androidx.loader:loader", "version": "1.1.0", "cves": [] }, { "name": "androidx.localbroadcastmanager:localbroadcastmanager", "version": "1.0.0", "cves": [] }, { "name": "androidx.media:media", "version": "1.6.0", "cves": [] }, { "name": "androidx.print:print", "version": "1.0.0", "cves": [] }, { "name": "androidx.privacysandbox.ads:ads-adservices", "version": "1.1.0-beta11", "cves": [] }, { "name": "androidx.privacysandbox.ads:ads-adservices-java", "version": "1.1.0-beta11", "cves": [] }, { "name": "androidx.profileinstaller:profileinstaller", "version": "1.4.0", "cves": [] }, { "name": "androidx.recyclerview:recyclerview", "version": "1.4.0", "cves": [] }, { "name": "androidx.room:room-runtime", "version": "2.2.5", "cves": [] }, { "name": "androidx.savedstate:savedstate", "version": "1.3.1", "cves": [] }, { "name": "androidx.savedstate:savedstate-ktx", "version": "1.3.1", "cves": [] }, { "name": "androidx.security:security-crypto", "version": "1.1.0-alpha06", "cves": [] }, { "name": "androidx.slidingpanelayout:slidingpanelayout", "version": "1.0.0", "cves": [] }, { "name": "androidx.sqlite:sqlite", "version": "2.7.1", "cves": [] }, { "name": "androidx.sqlite:sqlite-framework", "version": "2.7.1", "cves": [] }, { "name": "androidx.startup:startup-runtime", "version": "1.2.0", "cves": [] }, { "name": "androidx.swiperefreshlayout:swiperefreshlayout", "version": "1.0.0", "cves": [] }, { "name": "androidx.tracing:tracing", "version": "1.2.0", "cves": [] }, { "name": "androidx.transition:transition", "version": "1.5.0", "cves": [] }, { "name": "androidx.vectordrawable:vectordrawable", "version": "1.1.0", "cves": [] }, { "name": "androidx.vectordrawable:vectordrawable-animated", "version": "1.1.0", "cves": [] }, { "name": "androidx.versionedparcelable:versionedparcelable", "version": "1.1.1", "cves": [] }, { "name": "androidx.viewpager2:viewpager2", "version": "1.1.0-beta02", "cves": [] }, { "name": "androidx.viewpager:viewpager", "version": "1.0.0", "cves": [] }, { "name": "androidx.webkit:webkit", "version": "1.15.0", "cves": [] }, { "name": "androidx.work:work-runtime", "version": "2.7.0", "cves": [] }, { "name": "com.google.android.material:material", "version": "1.14.0", "cves": [] }, { "name": "com.squareup.okhttp3:okhttp", "version": "5.4.0", "cves": [] }, { "name": "kotlinx:coroutines_android", "version": "1.11.0", "cves": [] }, { "name": "kotlinx:coroutines_core", "version": "1.11.0", "cves": [] }, { "name": "kotlinx:coroutines_play_services", "version": "1.11.0", "cves": [] } ] }, "control_coverage": { "schema": "apk-scanner.coverage/v1", "framework": "OWASP MASVS v2", "disclaimer": "Static, metadata-only analysis. Each control is scored evidence-for / gap-signal / requires-manual-testing. This is evidence toward a MASVS assessment, NOT a certification — apk-scanner.com is not an authorized assessment lab. Absence of a static finding does not prove a control passes.", "rows": [ { "control": "MASVS-STORAGE-1", "category": "STORAGE", "title": "The app securely stores sensitive data.", "static": "partial", "status": "gap-detected", "count": 2, "findings": [ { "finding_type": 37, "key": "allow_backup", "title": "Application data is backup-enabled", "severity": "info", "verified": false, "relationship": "gap-signal", "cwe": [ 530, 312 ] }, { "finding_type": 20, "key": "google_api_key", "title": "Google API key (client-shipped; restriction unverified)", "severity": "low", "verified": false, "relationship": "gap-signal", "cwe": [ 798 ] } ] }, { "control": "MASVS-STORAGE-2", "category": "STORAGE", "title": "The app prevents leakage of sensitive data.", "static": "partial", "status": "gap-detected", "count": 3, "findings": [ { "finding_type": 37, "key": "allow_backup", "title": "Application data is backup-enabled", "severity": "info", "verified": false, "relationship": "gap-signal", "cwe": [ 530, 312 ] }, { "finding_type": 2, "key": "firebase_rtdb", "title": "Firebase Realtime Database reference", "severity": "low", "verified": false, "relationship": "gap-signal", "cwe": [ 200, 284 ] }, { "finding_type": 53, "key": "firebase_storage", "title": "Firebase Storage bucket reference", "severity": "low", "verified": false, "relationship": "gap-signal", "cwe": [ 200, 284 ] } ] }, { "control": "MASVS-CRYPTO-1", "category": "CRYPTO", "title": "The app employs current strong cryptography and uses it according to best practices.", "static": "partial", "status": "gap-detected", "count": 1, "findings": [ { "finding_type": 57, "key": "short_key", "title": "Short signing key (RSA 1024-bit)", "severity": "medium", "verified": false, "relationship": "gap-confirmed", "cwe": [ 326 ] } ] }, { "control": "MASVS-CRYPTO-2", "category": "CRYPTO", "title": "The app performs key management according to best practices.", "static": "partial", "status": "gap-detected", "count": 1, "findings": [ { "finding_type": 6, "key": "private_key", "title": "Private key material", "severity": "high", "verified": false, "relationship": "gap-confirmed", "cwe": [ 321 ] } ] }, { "control": "MASVS-AUTH-1", "category": "AUTH", "title": "The app uses secure authentication and authorization protocols.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-AUTH-2", "category": "AUTH", "title": "The app performs local authentication securely.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-AUTH-3", "category": "AUTH", "title": "The app secures sensitive operations with additional authentication.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-NETWORK-1", "category": "NETWORK", "title": "The app secures all network traffic according to current best practices.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-NETWORK-2", "category": "NETWORK", "title": "The app verifies the identity of the remote endpoint (e.g. certificate pinning).", "static": "partial", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PLATFORM-1", "category": "PLATFORM", "title": "The app uses IPC mechanisms securely.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PLATFORM-2", "category": "PLATFORM", "title": "The app uses WebViews securely.", "static": "partial", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PLATFORM-3", "category": "PLATFORM", "title": "The app uses the user interface securely.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-CODE-1", "category": "CODE", "title": "The app requires an up-to-date platform version.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-CODE-2", "category": "CODE", "title": "The app has a mechanism for enforcing updates.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-CODE-3", "category": "CODE", "title": "The app only uses software components without known vulnerabilities.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-CODE-4", "category": "CODE", "title": "The app validates and sanitizes all untrusted inputs and follows secure-coding practice.", "static": "partial", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-RESILIENCE-1", "category": "RESILIENCE", "title": "The app validates the integrity of the platform.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-RESILIENCE-2", "category": "RESILIENCE", "title": "The app implements anti-tampering mechanisms.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-RESILIENCE-3", "category": "RESILIENCE", "title": "The app implements anti-static-analysis mechanisms.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-RESILIENCE-4", "category": "RESILIENCE", "title": "The app implements anti-dynamic-analysis techniques.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] }, { "control": "MASVS-PRIVACY-1", "category": "PRIVACY", "title": "The app minimizes access to sensitive data and resources.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PRIVACY-2", "category": "PRIVACY", "title": "The app prevents identification of the user.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PRIVACY-3", "category": "PRIVACY", "title": "The app is transparent about data collection and usage.", "static": "yes", "status": "no-static-findings", "count": 0, "findings": [] }, { "control": "MASVS-PRIVACY-4", "category": "PRIVACY", "title": "The app offers user control over their data.", "static": "manual", "status": "requires-manual-testing", "count": 0, "findings": [] } ], "categories": [ { "category": "STORAGE", "controls": 2, "gaps": 2, "verified": 0, "manual": 0 }, { "category": "CRYPTO", "controls": 2, "gaps": 2, "verified": 0, "manual": 0 }, { "category": "AUTH", "controls": 3, "gaps": 0, "verified": 0, "manual": 3 }, { "category": "NETWORK", "controls": 2, "gaps": 0, "verified": 0, "manual": 0 }, { "category": "PLATFORM", "controls": 3, "gaps": 0, "verified": 0, "manual": 1 }, { "category": "CODE", "controls": 4, "gaps": 0, "verified": 0, "manual": 1 }, { "category": "RESILIENCE", "controls": 4, "gaps": 0, "verified": 0, "manual": 4 }, { "category": "PRIVACY", "controls": 4, "gaps": 0, "verified": 0, "manual": 1 } ] } }, "proof": { "alg": "ed25519", "key_id": "IE6LeZNX4dAAPLGr", "digest_sha256": "2846111624ce8f83666b8bfeab02e7ecad2de2bb9fd84e6d1c18496710c70985", "signature": "VCYH/LtV2EF6Fav0IRaLThBFMhNElogF3R8fGBmJjhbuqfZxsQfyJRmNmGWs0A2Z4BW/PTCMlfsmpj4nDKEFAg==", "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMCowBQYDK2VwAyEAwH2fYdYB5nD0CQslDtG3FgafcJBoOX2OGoT80Woksrk=\n-----END PUBLIC KEY-----\n", "verify_url": "https://apk-scanner.com/verify" } }