Main symptoms of infection may be revealed by shortening significantly battery life when the WiFi network access is enabled. The virus uses WiFi to transmit recorded information and broad cast on other devices. A worm first appeared on the iPhone last month but was not so dangerous. It is to notice that the worm only infects unlocked iPhones and iPod Touch.
According to Sophos representatives, Apple's default root password - 'alpine' can't be a guaranty of security for most iPhone users as the new worm may break in and and change it any way by directly editing the encrypted value of the password in the master password file, so that the new password can never be revealed. To avoid such kind of infections, Sophos strongly suggests to all users of jail-broken phones to change their passwords from 'alpine' immediately.