A hacking competition, paying cash prizes of up to $10,000, will target the Apple iPhone and Google's Android OS among other gadgets and software.
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3Com's TippingPoint security unit is sponsoring the prizes at the Pwn2Own contest on 18-20 March, at the CanSecWest security conference in Vancouver, British Columbia.
Smartphones running Android, Symbian and Windows Mobile will be targeted, along with BlackBerry and iPhone gadgets.
Hackers will be asked to find vulnerabilities in e-mail, SMS, website browsing and other applications and services.
Along with the gadgets, hackers will also be challenged to find security holes in a variety of browsers, including the new Google Chrome browser, running on laptops.
The hackers will not have physical access to the mobile devices, and all vulnerabilities found cannot be fully disclosed until the companies behind the gadgets and software have patched the holes.