do you have a firewall on your destop computer?
I think, the answer is "yes, of course!"
Why don't you wan't a firewall for your phone?
Your answere: "It is linux, we don't need it!"
In contrast to the "safe a.p.p.l.e market" we are free to get our application from everywhere...
But every person with minimum programming skills is able to use tools like "apktool", "smali/baksmali" to modify existing applications.
Why not integrate some spy functions (send private photos, use camera and microphone, send phonebook and email-adresses).
There is always a FREE program to disallow or allow applications the use of wifi or mobile data connections:
DROIDWALL ( h ttp://code.google.com/p/droidwall/ )
But this superb program need some special compiling parameters in the kernel compilation process.
(Something like 'iptables', 'multiport', 'iprange' and 'ipowner')
I found only one working kernel+rom, which is DroidWall compatible: "Six O´Clock A.M." from user 'oclock',
( h ttp://android.modaco.com/content/htc-desire-desire-modaco-com/312051/oclock-custom-rom/ )
This is a fine and stable release, but it is a v2.1 rom (not froyo).
Please, please froyo-kernel-developer: get the right parameters for kernel compilation, so we can use DroidWall.
So everybody can decide by himself, which application is allowed to send data to wifi or mobile data connection.