Mobile Malware and Privacy

4.

Mobile Operating System Security

4.1.

Android Security Architecture

4.1.1.

Application Sandboxing

4.1.1.1.

Process Isolation

4.1.1.2.

Data Separation

4.1.1.3.

Inter-Process Communication

4.1.2.

Permission System

4.1.2.1.

Install-time Permissions

4.1.2.2.

Runtime Permissions

4.1.2.3.

Dangerous Permissions

4.1.2.4.

Permission Groups

4.1.2.5.

Custom Permissions

4.1.3.

Application Signing

4.1.3.1.

Certificate Requirements

4.1.3.2.

Signature Verification

4.1.3.3.

4.1.4.

Google Play Protect

4.1.4.1.

4.1.4.2.

Threat Detection and Removal

4.1.4.3.

Machine Learning Integration

4.1.5.

4.1.5.1.

Boot Integrity Checks

4.1.5.2.

Tamper Detection

4.1.5.3.

Recovery Mechanisms

4.1.6.

Security-Enhanced Linux

4.1.6.1.

Mandatory Access Controls

4.1.6.2.

Policy Enforcement

4.1.6.3.

Domain Separation

4.1.7.

Hardware Security Features

4.1.7.1.

Trusted Execution Environment

4.1.7.2.

Hardware-Backed Keystore

4.1.7.3.

4.1.8.

Security Updates and Patch Management

4.1.8.1.

Monthly Security Patches

4.1.8.2.

Vendor Update Processes

4.1.8.3.

Fragmentation Challenges

4.2.

iOS Security Architecture

4.2.1.

Application Sandboxing

4.2.1.1.

Data and Resource Isolation

4.2.1.2.

Container-Based Security

4.2.2.

Mandatory Code Signing

4.2.2.1.

Developer Certificates

4.2.2.2.

App Integrity Verification

4.2.2.3.

Certificate Pinning

4.2.3.

App Store Review Process

4.2.3.1.

Static Analysis

4.2.3.2.

Dynamic Testing

4.2.3.3.

Policy Enforcement

4.2.4.

4.2.4.1.

Hardware-Based Security

4.2.4.2.

4.2.4.3.

Biometric Data Protection

4.2.5.

Data Protection API

4.2.5.1.

File-Level Encryption

4.2.5.2.

Data-at-Rest Security

4.2.5.3.

4.2.6.

System Integrity Protection

4.2.6.1.

Kernel Integrity

4.2.6.2.

Runtime Protections

4.2.7.

Permissions and Privacy Controls

4.2.7.1.

User Consent Mechanisms

4.2.7.2.

4.2.7.3.

App Tracking Transparency

4.2.8.

Security Updates

4.2.8.1.

Automatic Updates

4.2.8.2.

Rapid Response Patches

4.3.

Comparative Security Analysis

4.3.1.

Open vs Closed Ecosystems

4.3.1.1.

Security Trade-offs

4.3.1.2.

User Control vs Security

4.3.1.3.

Transparency Considerations

4.3.2.

Sideloading Implications

4.3.2.1.

4.3.2.2.

User Freedom Benefits

4.3.2.3.

Enterprise Use Cases

4.3.3.

Fragmentation Issues

4.3.3.1.

Android Update Delays

4.3.3.2.

Inconsistent Security Posture

4.3.3.3.

Vendor Customizations

4.3.4.

Rooting and Jailbreaking

4.3.4.1.

Definition and Methods

4.3.4.2.

User Motivations

4.3.4.3.

Security Implications

4.3.4.4.

Detection Mechanisms

4.3.4.5.

Prevention Strategies

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5. Mobile Malware Analysis