The Blackberry has become very popular in large firms
A booby-trapped game of noughts and crosses has been used to show how a Blackberry can be hijacked to steal confidential data.
reated by a security researcher the game contains malicious code that turns the popular mobile e-mail device into a backdoor into corporate networks.
Dubbed "blackjacking" the technique is thought to be the first to try to take advantage of the Blackberry.