I am a new owner of a HTC Hero. I was wondering what the consensus of opinion is on the need for internet security on mobiles, particularly Android phones.
I wouldn't worry too much to be honest at this stage -- just watch out what you get from the app store as it's fairly open and some malware got through recently, if I recall correctly. (News Article)
I'd expect Google to patch any exploits and news of such malware would probably be on technology news websites, if you want to check up from time to time.