Memory Issues on iphone

I was developed one small iphone business application...In my application i used the data fetching from server..If that time the data will store on phone memory or RAM..I think its not secure... So I will decide to store another customized location...开发者_开发问答.Is this possible in phone...Any good ideas?

If you want good security, you may want to receive the data in encrypted form, and decrypt only when you act on the data.