In a resale scenario, a previous owner could continue to have access to the online account – with all the new owner’s information stored within.

Some mobile apps can take and share screenshots and video of the phones’ app activity without users’ knowledge.

Apple removed an iOS application from its Chinese iTunes App Store that allowed users of non-jailbroken iOS devices to install pirated and jailbroken apps. Researchers at Palo Alto Networks, who discovered the rogue application, said the app was not malicious, but presented a serious security risk if developers behind the application used the crack in...