security/cellphones

is any company working on ,or has developed,any type of software for online cellphone security?i get scientific american mag and they had a major artical on this issue.it also warned people with bluetooth wireless that they didn’t have to be on line for their phone to be compromised. at the time i didn’t have that type of cellphone,but i am now getting one since that’s the only kind of new phone that you can get.has anyone heard of any problems like this?
diana