There is an emerging security threat to iPhone users. More specifically this is a threat to jail-broken iphones. Jail-broken iphones are those using carriers other than AT&T.
These users are vulnerable to a kind of worm that steals account logins. Apple doesn’t care about you because, aah, you’re not technically a legitimate iphone user. You can do several things to protect yourselves.
The easiest step is to change the default login password for your iphones. The malware uses this default password which is the same for all iphones, so changing it foils this attack.