I got MyXperia(TM) via OTA today and its a stolen phone locator service from Sony https://myxperia.sonymobile.com
It has GPS location shown on a map-, "lost my phone message" on lock-screen, 60 second sound/alarm push, lock the device and erase phone and memory card.
I think it works well so far.
Install as regular apk or change your custom no# 1268-6904 in build.prop and get it via OTA.
Ps. Why do you take it from here and call it your own leak?