iPhone Security Model

The video tutorial explains the iOS security model, focusing on features like reduced attack surface, stripped down iOS, privilege separation, code signing, data execution prevention (DEP), address space layout randomization (ASLR), and sandboxing. These features collectively enhance the security of iOS devices by minimizing vulnerabilities, controlling application permissions, and preventing unauthorized code execution.

What is the primary reason for not including Java and Flash in iOS?

• They are too resource-intensive for mobile devices.

• They are not popular among iOS users.

• They have a history of security vulnerabilities.

• They are not compatible with iOS hardware.

How does iOS limit the potential damage from an attack?

• By allowing all applications to access system files.

• By using a single user account for all processes.

• By disabling all network connections.

• By running processes under different user privileges.

What is the role of code signing in iOS security?

• To prevent applications from accessing the internet.

• To allow dynamic behavior changes in applications.

• To enable faster application updates.

• To ensure only trusted code is executed.

What does Data Execution Prevention (DEP) do?

• It prevents execution of data as code.

• It randomizes memory locations.

• It allows execution of data as code.

• It restricts application permissions.

How does Address Space Layout Randomization (ASLR) enhance security?

• By disabling all third-party applications.

• By randomizing the location of objects in memory.

• By encrypting all data stored on the device.

• By blocking all incoming network connections.

What is the purpose of sandboxing in iOS?

• To restrict application permissions and access.

• To provide a backup for application data.

• To allow applications to share data freely.

• To enable faster application performance.

Which of the following is NOT a feature of iOS security?

• Reduced attack surface

• Privilege separation

• Open source code

• Code signing