拿Z2時就一直覺得這資料夾很礙眼，也刪不掉。後來發現是還原原廠就會有的，
就也不管它了
看起來是連Z3跟Z3c也會有這個百度資料夾，不過我發現S3也有這個資料夾
好消息是，官方說明之後更新會拿掉了
原文如下:
Select Sony Xperia firmware appears to contain Baidu spyware
Are you running a Sony Xperia handset with KitKat firmware? Then you may want
to check your internal storage for a folder called “Baidu”. It appears that
certain Android 4.4.2 or 4.4.4 firmware contains this folder, which is part
of the stock build. The folder cannot be deleted, even if you try it will
reappear once again shortly after.
Strangely, the folder appears to be created by Sony’s “my Xperia” service
each time a network connection is switched on. Unfortunately, unticking the
app from Device Administrators does not solve the issue. Neither does
starting the phone in Safe Mode. The only temporary workaround is to block
the MyXperia app from starting by using an “adb shell” command.
What is quite concerning regarding this development, is that through this
process, the phone is making several pings to Chinese servers. Yet, we don’t
know what information is being communicated. Sony recently escalated this to
its internal teams and recently outlined the following message on its support
forum:
“This folder will be removed in future software updates for the phone. Until
then I can only advise that you delete it manually after a reboot if you want
to remove it. It’s safe to just delete it.”
This is obviously a very serious issue, we noticed the “Baidu” folder on
both new Xperia Z3 and Xperia Z3 Compact handsets. Sony needs to communicate
how this app appeared in the first place and to reveal what information is
being gathered. At least, Sony has a fix on the way. As soon as we hear any
more we’ll let you know.
出處:Xperia blog http://goo.gl/rLSepW