Does "Jackeey Wallpaper" sound familiar to you? If you downloaded one of their Android apps, then there's a good chance your privacy was compromised. According to telecoms security company Lookout, the app was sending users' info to a Chinese website.
The data infringement was revealed at the Black Hat security expo in Las Vegas yesterday, where listeners were told of how the personal details of between 1.1m - 4.6m who downloaded the app were sent to the Chinese developer's website www.imnet.us. And why were people downloading this app? Because it had free wallpapers—though it's not known exactly which wallpapers. Judging by the various apps Jackeey Wallpaper has created, it could've been anything from a Star Wars theme, Gundam, or even My Little Pony—or all of them.
Late June, Google came under fire when it was discovered they've got the ability to fire up a killswitch for malicious apps, removing them not only from the Market but also from people's phones. I'd say that killswitch is actually pretty handy, after all. [Mobile Beat]
UPDATE: Phandroid heard from Lookout, who clarified a few points—namely, that "the app does collect data from your phone, but only the device's phone number, subscriber identifier, and voicemail number fields are retrieved. SMS and browsing history are not touched by any of the apps they analyzed throughout their Blackhat conference. Your voicemail's password is also not transmitted unless you included the password in your phone's voicemail number field." [Thanks, commenter @gwydion]