First, there seems to a general agreement that the current version of the pinned "security help" is broken in many ways. Why Syzygy kindly took the trouble to check the links and found many recommended software was gone and links were invalid.
Second, many suggested referring DUers to other sites where the information is both expert and more current. Major Geeks seems to be a favorite, because the software they recommend is freeware/shareware and the site is not littered with deceptive "clickme" ad links. This page
http://www.majorgeeks.com/page.php?id=20 seems to cover most of what we included, but a lot more as well, which is both a good thing for some and a bad thing/confusing for others. I noticed only one dead link, but didn't check through everything. (I sent a heads-up to the webmaster.)
It seems to me that the novice when it comes to computer tech would take one look at that page, see a mix of terms that are only vaguely familiar at best, maybe firewall and virus, and a bunch more like malware and rootkit that meant only that this site was not aimed at them, and just "Run Away! Run Away!" Pardon the "Holy Grail" reference, but I think it is absolutely descriptive of the reaction of a great many here and elsewhere when shown that site.
I think maybe we could make that information on Major Geeks more accessible by providing a bit more introductory information and direct links to those sections that offer the links.
For example:
Your first line of defense is a Firewall. What is a Firewall? (I couldn't even try put that definition into a dozen or three plain English words. Maybe someone can.) Windows computers come with a built-in firewall, but you may want to replace it with another, because (again, I'm not able to elaborate further). Free alternatives can be found at: (link).
Your second line of defense is against Viruses. Viruses are (short definition here). The can infect your computer through almost any activity that brings you in contact with the ouytside world - websites, email, videos and so on. New Windows-based computers usually give a short free trial of some Anti-Virus which then demand annual payments if you don't want to see your computer trashed. A protection racket. Better alternatives are both available and free. These programs usually run in the background and give an alert only when they encounter a nasty, so, with luck, you'll never even notice them. Several are at (link), and this forum's members have noted that AV#1 is good because (why) and AV#2 is good for (whatever).
The third level is Malware. These programs can get on your computer through the same routes as viruses, but are not as easily noticeed since they are not as deadly or sickening as viruses. These are more like parasites which the host is less likely to notice. Yet they may be worse - spyware or programs designed to watch you typing your credit card info and report back, or serving about any sort of purpose the rogue criminal or corporate entity might intend. You can find several at (link). People in this forum are fond of (this one) and (that one), but if they don't seem comfortable to you, check out the others. (Is this true?-->) Like antivirus software, some, but not all, of these scan your computer for incoming "bad stuff" but to be effective it is important to manually run a full
Most here would regard the first three as essential for anyone who ever clicks an unfamiliar link or opens an email, even from good friends.
Fourth (and fifth) level would be.... (There's a lot mentioned in the original "security help" as well as in the Major Geeks site that goes beyond these three steps.