Recently NOD32 has been detecting lots of Trojans and worms on my system. I'm careful what I install, run Kerio firewall and only permit programs I'm sure of to access the Internet. I have also been using Firefox and Opera for many years for almost everything but windows update so I'm not sure where the Trojans came from. http://uberish.fastmail.fm/1.jpg What do they do? Are they key loggers, or spam forwarders or something else. I've been on broadband for 18 months and apart from a few viruses sent by email I've been completely clean. After deleting each one, hours later more would appear so I got a bit paranoid and ran TDS3 and KAV 15 day trial in case NOD32 (using advanced Heuristics shell) was missing anything. Sure enough they both found these 2 Trojan.Win32.Starter Backdoor.SDBot.ja. I sent a sample of the backdoor one to ESET (deleted the other before I remembered) I used to think I was taking enough precautions by being careful and running NOD32 with a firewall but it looks like I was wrong. Do I also need a resident Trojan scanner as NOD32 seems deficient in this department? Would KAV be a better choice, I've heard good things about Boclean but there's no free trial. Sorry for all the questions it's just that the infections have come as a bit of a shock and I want to stop it happening again.