The Android operating system influences OS security controls to protect user data, system resources, device integrity against malware, and provides application isolation. Android devices which contains firmware is vulnerable through a debugging feature left inside the bootloader acts as a backdoor and bypasses the authentication procedures. A backdoor is a security risk because there are always crackers out there looking for vulnerability to exploit. Android security issues exist in different ways. Lack of control over Android app security is one of the main issues. Applications from outside the Android Market often come from un-vetted, third-party sources. Downloading these apps is one way that devices can get malware. Most versions of the Android OS do not possess native tracking or disabling features, which are invaluable in the event a device is lost or stolen.
Android has included security features that reduce the density and brunt of application security issues. The system is designed to build apps with the default system and file permissions and avoid difficult decisions about security.
How Does the Malware Works in Android
- The attacker works by repackaging authentic applications from the Google play store with malware and then released it to a third-party store.
- The repackaged apps remain fully functional and that makes the problem difficult to detect.
- The system-level status lets them gain access to key security details built in the Android.
- This can let a hacker gain access to sensitive data about the user.
Basic Security Features to get rid of Backdoor
- The Android Application Sandbox isolates application data and code execution from other apps.
- An application framework with booming implementations of common security functionality such as cryptography, permissions, and secure IPC.
- Technologies 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.
- Device encryption to put all files into a format that cannot be understood without first decrypting them with the proper key or a password that only known by the user.
- VPN service to route traffic through a different server or selection of servers.
The most common security concern for an application on Android is whether the data saved on the device is accessible to other apps. Encryption of local files using a key which is not directly accessible to the application provides additional protection for the sensitive data. It provides protection for a lost device without file system encryption. Prior to dynamic loading, executable files or class files are not advisable to store on external storage. If applications retrieve executable files from external storage, the files should be signed and cryptographically verified.
Android has established APIs that allow access to user data into the set of protected APIs. Android devices will also collect user data within third-party applications installed by the user. Applications that choose to share this information can use Android OS permission to protect the data from third-party applications. A third-party application may ask permission to access these resources while installation. If permission is granted the application will have access to the data requested any time when it is installed.
There are plenty of practices that can quite easily do to protect privacy and help to keep Android devices a more secure. Perhaps the most effective change that can make is to tweak your phone habits. Some of the tips to keep you safe from backdoor troubles are keep location usage to a minimum, disable or uninstall the apps you do not use, keep an eye on app permission during updates and change your passwords regularly.