An exploit allows access to the Vita's PSP emulation for homebrew apps.
It is being reported that Sony has taken down two PSP titles, Hot Shots Tennis and MotorStorm Arctic Rift, from the PlayStation Network. This is due to concerns that they can be used to hack the new PlayStation Vita. The two titles are now no longer available to download from any device, including the PlayStation 3, PSP and the aforementioned PlayStation Vita.