For Android, detect Contact List by correlating analyst-visible device/network evidence and management state; use streaming or batched telemetry only where the documented collector is deployed. Correlate API Calls via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: ContentResolver.query(ContactsContract) with projection=all_fields]; Network Traffic Flow via Android Enterprise Network Logging / Enterprise VPN [DevicePolicyManager.retrieveNetworkLogs(): DnsEvent / ConnectEvent; VPN flow metadata]; Permissions Request via Android Enterprise DPC / Application Vetting [DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review]. Alert on a sequence or state change inconsistent with the device/app baseline, approved management policy, or expected user workflow; do not infer unobserved API calls, file/process activity, or payload content from management state alone.
| Data Component | Name | Channel |
|---|---|---|
| API Calls (DC0112) | mobile:DynamicAnalysis | Dynamic API/runtime trace: ContentResolver.query(ContactsContract) with projection=all_fields |
| Network Traffic Flow (DC0078) | android:EnterpriseNetworkLog | DevicePolicyManager.retrieveNetworkLogs(): DnsEvent / ConnectEvent; VPN flow metadata |
| Permissions Request (DC0116) | android:DevicePolicyManager | DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review |
| Field | Description |
|---|---|
| ApprovedContactsApps | Approved CRM, exchange sync, address book apps. Derive from MDM catalog. |
| ContactQueryThreshold | Default 50 queries/2min — CRM apps legitimately read contacts; tune by app category. Tightening: 20 for unknown apps. |
| ContactUplinkThreshold | Default 100KB — contact records average ~4KB; 25 contacts = 100KB. |
| ContactSyncCDNList | Exchange, Salesforce, Google People API endpoints. |
| ExfilWindow | Default 120s. |
For iOS, detect Contact List by correlating analyst-visible device/network evidence and management state; use streaming or batched telemetry only where the documented collector is deployed. Correlate API Calls via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: CNContactStore.enumerateContacts with CNContactFetchRequest.keysToFetch containing all contact keys by app NOT IN $ApprovedContactsApps$]; Network Traffic Flow via Apple Network Extension / Enterprise VPN [NEFilterFlow / per-app VPN / secure-web-gateway flow metadata]; Permissions Request via Application Vetting [Code-signing entitlements and Info.plist privacy usage-description keys]. Alert on a sequence or state change inconsistent with the device/app baseline, approved management policy, or expected user workflow; do not infer unobserved API calls, file/process activity, or payload content from management state alone.
| Data Component | Name | Channel |
|---|---|---|
| API Calls (DC0112) | mobile:DynamicAnalysis | Dynamic API/runtime trace: CNContactStore.enumerateContacts with CNContactFetchRequest.keysToFetch containing all contact keys by app NOT IN $ApprovedContactsApps$ |
| Network Traffic Flow (DC0078) | iOS:NetworkExtension | NEFilterFlow / per-app VPN / secure-web-gateway flow metadata |
| Permissions Request (DC0116) | mobile:ApplicationVetting | Code-signing entitlements and Info.plist privacy usage-description keys |
| Field | Description |
|---|---|
| ApprovedContactsApps | com.microsoft.outlook, Salesforce, enterprise address book bundles. |
| ContactUplinkThreshold | Default 100KB. |
| ContactSyncCDNList | Exchange, Salesforce, Google People API endpoints. |
| ExfilWindow | Default 120s. |