mem that's not correct, they only sell consumers on all this, BECAUSE the average computer user is into USING a PC, not learning about it. The truth is real computer security does not need or require this "Layers" of defense as you might think.
Ok here is the run down, yes tools are need, BUT experience is the REAL LAYER for protection.
1 Firewall
1 or 2 Anti Virus Program
1 Trojan Scanner Program
4-5 Spyware programs
Why the hugh amount of Spyware apps, because not one spyware applicaton on the market detects everything. Why a trojan scanner, because not one virus program on the market will detect all trojans. Trojans are not viruses and vice versa. And you only need the virus scanner running in the background at startup.
With 2 Antivirus programs sometimes in Windows the system has problems with this and even the antivirus programs themselves, so 2 can be good because alot of antivirus programs out there don't even find everything. So far Symantec has been good at this, detecting many signatures.
Running spyware and all sorts of other types of programs like what we are suggesting here, in the background is not needed, all this does is waste system resources.
As a home user you should be taking a more active approach and scanning the system manually from time to time, BECAUSE many system applications running in the background as watchdogs are not 100% effective, but doing a manual scan is.
Now if we want to go about all of this, from a Corporate, business view, then this is different, there will need to be more automation, but at the smaller levels of computing like HOME user, Education is your best LAYER of defense, not slapping in 20 apps running in the background thinking you are safe, this is not so.
Look the TRUTH is what are we selling here? Do we want DRONE computer users, or do we want to educate them and show them ways in which things are done, not just simply what the masses are doing, BECAUSE of a lack of experience.
Bassmaster get tools, antivirus, spyware, trojan and a firewall, do yourself a favor and learn a little and even in learning your system isn't going to blowup from spyware overload. As a small home user learn to use the tools, scanning the system often, not just relying on them sitting in the taskbar watching.
Take a ACTIVE role and learn and in the end you'll know that YOU are the best LAYER of protection, because tools aren't perfect, no software is!
ALOHA