Mobile App Sandbox
What is Mobile App Sandbox?
Mobile App SandboxAn operating-system enforced boundary that limits what files, IPC, and APIs a mobile application can access, so a compromised app cannot easily reach other apps' data.
On iOS the App Sandbox combines a per-app container directory, mandatory access control, code signing, and entitlements to confine an application. On Android the equivalent uses one Linux UID per app, SELinux policies, scoped storage, and permission-gated platform APIs. Together with Verified Boot and the Secure Enclave / TrustZone, the sandbox is the cornerstone of mobile security: even a remote-code-execution exploit in one app is constrained to that app's container until the attacker chains a kernel or driver bug. Jailbreaks, root, and certain runtime hooking tools deliberately weaken the sandbox, which is why most banking and enterprise apps refuse to run in those conditions.
● Examples
- 01
On iOS, a messaging app can read only files inside its own container unless the user explicitly grants a Documents picker.
- 02
On Android, scoped storage prevents a flashlight app from reading photos in another app's private directory.
● Frequently asked questions
What is Mobile App Sandbox?
An operating-system enforced boundary that limits what files, IPC, and APIs a mobile application can access, so a compromised app cannot easily reach other apps' data. It belongs to the Mobile Security category of cybersecurity.
What does Mobile App Sandbox mean?
An operating-system enforced boundary that limits what files, IPC, and APIs a mobile application can access, so a compromised app cannot easily reach other apps' data.
How does Mobile App Sandbox work?
On iOS the App Sandbox combines a per-app container directory, mandatory access control, code signing, and entitlements to confine an application. On Android the equivalent uses one Linux UID per app, SELinux policies, scoped storage, and permission-gated platform APIs. Together with Verified Boot and the Secure Enclave / TrustZone, the sandbox is the cornerstone of mobile security: even a remote-code-execution exploit in one app is constrained to that app's container until the attacker chains a kernel or driver bug. Jailbreaks, root, and certain runtime hooking tools deliberately weaken the sandbox, which is why most banking and enterprise apps refuse to run in those conditions.
How do you defend against Mobile App Sandbox?
Defences for Mobile App Sandbox typically combine technical controls and operational practices, as detailed in the full definition above.
What are other names for Mobile App Sandbox?
Common alternative names include: App Sandbox, Application sandbox.
● Related terms
- appsec№ 516
iframe sandbox
HTML attribute that applies extra restrictions to an iframe's content, blocking scripts, forms, navigation, and same-origin access unless explicitly re-enabled.
- mobile-security№ 694
Mobile App Security
The practice of designing, building, and testing iOS and Android applications to protect user data, prevent reverse engineering, and resist runtime tampering.
- mobile-security№ 692
Mobile App Permissions
The operating-system controls that require user consent before an app can access sensitive resources such as location, microphone, camera, contacts, photos, SMS, or background sensors.
- mobile-security№ 562
Jailbreak (iOS)
The process of bypassing Apple's code-signing and sandbox restrictions on an iPhone or iPad so the user can install software that Apple has not approved.
- mobile-security№ 948
Rooting (Android)
Gaining unrestricted superuser (root) privileges on an Android device, bypassing the protections enforced by the Linux kernel, SELinux, and the Android verified boot chain.
- appsec№ 056
Application Security (AppSec)
The discipline of designing, building, testing and operating software so it resists abuse, tampering and unauthorized access throughout its lifecycle.