The iphone is a pretty controversial device. Some love it, some hate it, others couldn't care less and if you want to write software for it, you have to go with Apples AppStore, and they can be pretty picky before letting you submit.
It seems they aren't picky enough since a new case of Apps stealing your phone number arised. Apparently the developer Storm 8 released a number of games, which exectute malicious code to collect the number from your phone.
The respective games are
World War
IMobsters
Racing Live
Vampires
Kingdoms
Zombies
Rockstars and
Ninjas Live
It is probably too late to prevent them from stealing your number, but it wouldn't hurt to get rid of them, just in case theres more to it.
A preceding story was caused by the swiss developer Mogo earlier this year. They stole phone numbers of their free customers and called them to update to the paid version.
Is it possible that all the restrictions established by Apple still aren't enough?