Android has built-in security features that significantly reduce the frequency and impact of application security issues. The system is designed so that you can typically build your apps with the default system and file permissions and avoid difficult decisions about security.

The following core security features help you build secure apps:

  • The Android Application Sandbox, which isolates your app data and code execution from other apps.
  • An application framework with robust implementations of common security functionality such as cryptography, permissions, and secure IPC.
  • Technologies like ASLR, NX, ProPolice, safe_iop, OpenBSD dlmalloc, OpenBSD calloc, and Linux mmap_min_addr to mitigate risks associated with common memory management errors.
  • An encrypted file system that can be enabled to protect data on lost or stolen devices.
  • User-granted permissions to restrict access to system features and user data.
  • Application-defined permissions to control application data on a per-app basis.

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