How to Disable BAIDU SPYWARE in Sony Xperia???

Follow these steps:

1. Backup your important data and factory reset the device.
2. Turn on the device and go to Settings -> Apps -> Running and Force stop both “MyXperia” apps.
3. Then remove the baidu folder using File Kommander app.
4. Go to Settings -> About Phone -> Click 7 times on the Build Number to enable developer mode.
5. Download or Install the Android SDK on your computer and then connect the Sony device to it using USB cable.
6. Run the adb tool terminal : adb shell 
7. In adb shell, type the command: pm block com.sonymobile.mx.android
8. Exit adb shell
9. Reboot the device.

Note that the spyware does not necessarily affect the process or functionality of your mobile devices, so you shouldn't be worried in this respect. Sony has not officially responded to this ‘baidu’ folder issue. 

However, the company has recognized the issue and has said that in the next release the problem will be fixed. Unless Sony can roll out some kind of fix in the near future then it seems you might have to wait until Lollipop rolls out in January before you can get rid of Baidu.