Data Isolation Support

Magisk KSU APatch

Data Isolation Support is a security enhancement module developed by @Harumi that backports native /data/data application storage isolation to legacy Android versions (Android 10 and lower), preventing unauthorized inter-app data sniffing via dynamic mount namespaces.

Storage Sandboxing for Legacy Android

Enforce strict per-application data privacy and sandbox boundaries on Android 7.0 through Android 10.

Private Directory Isolation

Isolates the /data/data path so each running application can only see and access its own assigned private package directory.

Process Monitor Integration

Leverages HuskyDG's magisk_proc_monitor to track application spawns and dynamically unmount global private paths in real time.

Legacy OS Hardening

Brings modern Android 11+ storage isolation standards to older firmware releases including Android Nougat (7.x), Pie (9.0), and Q (10.0).

How It Works & Verification

In Android 10 and older versions, apps could potentially query paths inside /data/data/ to detect installed packages or inspect private caches. This module hooks into the system process lifecycle to isolate mount namespaces per UID at runtime.

You can verify that the sandbox is active by running a stat check inside a non-root terminal session:

# Run this command inside a standard non-root terminal (Terminal Emulator / Termux)
$ stat /data/data/com.android.shell
# Expected result if isolation is functioning correctly:
stat: '/data/data/com.android.shell': No such file or directory
Data Isolation Support Terminal Verification
Terminal verification output showing restricted access to other package directories.

Module Info

  • Version v1.2
  • Module By
    HuskyDG
  • Source Code View Repository
  • Tags
    #Data Isolation #Magisk Module #Privacy #HuskyDG #Android 10 #Security #Process Monitor #Systemless
  • Requirement
    Magisk KernelSU APatch
  • Latest Update