Malware: Fighting Malicious Code

Adam Jenkins writes "I have had a fair bit of experience with malware, from removing DOS viruses to removing rootkits on Windows servers. Currently I am working in desktop support at a university -- exactly where many of the anti-malware battles occur." With that background, he provides a review of the reprinted Malware: Fighting Malicious Code, writing "As with many things computer-related, this book might age quickly, but it has lots of sound theory that will stay relevant for a long time, even if it doesn't discuss the latest worm by name. I haven't read the author's earlier book (Counter Hack: A Step-by-Step Guide to Computer Attacks and Effective Defenses) but he is well known as both the author of that and also for the SANS lectures he runs." Read on for the rest of Jenkins' review, or revisit Matt Linton's review.

Malware: Fighting Malicious Code
author	Ed Skoudis with Lenny Zeltser
pages	647 (paperback)
publisher	Prentice Hall PTR
rating	9
reviewer	Adam Jenkins
ISBN	0131014056
summary	very comprehensive guide to malware

The blurb on the back cover states that the book is "intended for system administrators, network personnel, security personnel, savvy home computer users, and anyone else interested in keeping their systems safe from attackers." It may seem a minor point, but that is a very broad range of people! However, the book is comprehensive enough to merit the claim. For example, the chapter on "malicious mobile code" (or "active content") includes tips on how to configure Internet Explorer's security settings (great for savvy home users), while the information presented on using group policies, Internet Explorer 6 Administration Kit and incorporating changes into Ghost SOE images would be more appropriate for system administrators. One can argue that system/network administrators already know all this, but let's face it; there are many who don't, or who need prompting. The book is particularly strong in explaining theory, like how different types of malware work, and it reminds me of a lot of university text books in layout. Each chapter has a Conclusions section, a summary and a list of references -- great for retention of knowledge, or to help if you are studying for an exam on the chapter. There is a reasonable amount of redundant information in the book; particularly in the "defence" section of each chapter, where file integrity checkers, bootable CDs with static binaries and the like are discussed.

"Malware" is a deliberately broad term, but it suits this book, which covers not just viruses, Trojan horses and worms, but also rootkits and BIOS microcode. The scope extends a bit beyond just fighting malicious code, Skoudis goes so far as analyzing how it works, how it has developed (from other malware) and speculated on the future of malicious code.

Malware is very readable, while still being technically accurate. It does not cover everything, but Skoudis has lots of great analogies, and quotes that range from such diverse sources as Stephen Hawking, Lord of the Rings, The Matrix, Wargames, Milli Vanilli and Styx. The book is written in a conversational and at times humourous style, and I am assuming a lot of the content has been presented in Skoudis's lectures.

Despite the practical approach of the book, the content is not exactly what you might expect. Skoudis's introduction says the book will focus on practicality: "we'll discuss time-tested, real-world actions you can take to secure your systems from attack." Why then in 700 pages is there barely a mention of how to configure a firewall? I think because there are so many applications covered, and because there is so much emphasis on all the fun and cute tools (like the sysinternals ones, and netcat) that some of the less exotic and useful ones suffer in omission.

The Introduction also says the book is operating-system agnostic. Both Windows and Linux are covered, true, but that's not a very broad slice: Solaris, HPUX, BSD, Tru64 and OS X barely get a mention. Even if the book is mostly aimed at home users, there are many using OS X, and in fact many using Mac OS, Windows 98 and even non-Intel platforms.

The illustrations are limited to diagrams, tables and screenshots, and while they are nothing fancy, most are quite clear and helpful.

There is no accompanying CD with the book, but there are so many tools covered in the text, chances are that many of would be quite out-of-date by now anyhow, so you are better off downloading them yourself. Skoudis has a web-site at counterhack.net/, and co-author Lenny Zeltser has one at zeltser.com/. The web sites are not limited to discussing this book, but are more about what Ed and Lenny have written lately, and the "Crack the Hacker Challenges" on Ed's site look fun. There's a list of references at the end of each chapter, and many sources refered to in the text (especially in the last 2 chapters), though I am surprised antivirus company web sites like f-secure, Sophos and CA weren't included; I have found the analyses there at least equal in accuracy and depth to those of McAfee, Trend and Symantec.

As far as bootable CDs for forensics and network security tasks, I'm surprised Trinux and Knoppix STD didn't score a mention, though normal Knoppix and FIRE are mentioned.

The chapter on malicious mobile code covers Java and ActiveX fairly evenly, but I think more emphasis on current threats is the way to go. (Particularly as there is so much FUD surrounding adware and how to remove it.)

One very general flaw with the book is that it tends to focus on the fancier stuff not just in its selection and description of security tooks, but in the actual malware discussed. The information on Code Red II and Bugbear.B is a noticeable exception to this, but many of the other viruses that are discussed -- like Kallisti, Tristate, PHP.Pirus, and Win2k.Stream -- are anything but common.

All that said, I haven't seen any other books that provide such great explanations of rootkits, malicious mobile code or adware, but also hint at things to come like Flash/Warhol worms and microcode malware. This book fills a void in that it covers current malware (with some historical perspective) with enough analogies, scenarios and "detective work" to hold the reader's interest. Hopefully readers will be inspired by the enthusiasm that Skoudis and Zeltser obviously have for fighting malware, and will use this book as a stepping stone to learn more and beat the malware that seems all too prevalent on today's Internet.

---

You can purchase Malware: Fighting Malicious Code from bn.com. Slashdot welcomes readers' book reviews. To see your own review here, carefully read the book review guidelines, then visit the submission page.

Tru64?

[MyIS]

Solaris, HPUX, BSD, Tru64 and OS X barely get a mention ... because I can barely keep the damn worms off my Tru64 box...

Re:Tru64?

[Dr Caleb]

I wondered why hurd wasn't mentioned then . . .

Re:I've never had IE malware

[DarkMantle]

I reckon they can be solved by the user not wanting to browse the web

yeah, that's about the only way to keep IE safe from malware. But hell, just download Kazaa, and make sure you get XXX-Porno.jpg.exe and look at the pretty picture.

Re:I've never had IE malware

[flibuste]

I've *NEVER* had a single nontrivial web page load properly

Do you mean you never used your computer since Win95? That makes sense then

Because otherwise, considering that 90% of browsers are IE, this would mean 90% of the world CANNOT see most web pages. So 90% of internet users actuall *fake* viewing web pages, order stuff, play games, get worms, etc.

Sounds weird doesn't it?

Re:I've never had IE malware

[koh]

Wow, wow. Have to reply here.

In case you didn't notice it, my post was a would-be humourous duplication of my parent post [slashdot.org], my point being that using Proxomitron/Privoxy and surfing with IE security set to high prevents many pages from loading properly and is not well-suited for the casual user.

That humourous duplication obviously went belly-up. No offense, I'll try again next year :)

Re:I've never had IE malware

[arevos]

I've had similar experiences. When the parent post is modded down to -1, to the casual reader, you go from sounding clever to sounding seriously moronic :)

Re:I've never had IE malware

[Scoria]

I understand that the parent is likely to be a troll, but Internet Explorer can be compromised, regardless of your security preferences. An external host can easily override them. However, you may be partially correct. Traffic filtration, despite the inherent computational overhead, is often intrinsic to a secure deployment. For instance, an administrator can often mitigate self-propagating worms by simply quarantining executables at the mail server.

Of course, this negates one obvious threat: the LAN. If a

Re:I've never had IE malware

[ljw1004]

My article above was not flamebait, not a troll. I honestly don't believe that IE is an unsafe tool when you run it with appropriate security settings. Here's a promise. Reply to this message and give me a web-page which you claim will automatically install malware. I'll visit the page and make screenshots/movie out of it. I'll make a webpage with the results. If the slashdot groupthink is correct, then my computer will be infested with malware and I'll have to reinstall it from scratch and it will serve

Re:I've never had IE malware

[Psychofreak]

Could you please post screenshots of your configuration BEFORE you go onto your epic quest? If you are willing to play gunia pig and DO get fragged we would like to know what the settings were before the experiment.

You know...

Scientific Method

Repeatability of results.

Also please include what your internet provider is, and if you have any proxy setting, personal firewalls, home network router....EVERYTHING.
I don't care to repeat the experiment, I am learning Slackware now, but I may find this infor help

Re:I've never had IE malware

[paretooptimum]

That sure seems like a lot of work - changing numerous IE settings in numerous places - and installing a third party program (proxomitron) that from recollection is no longer supported by its author, then loading a large un-tested configuration file to this program.

Why not just use Firefox????

Is there something I'm missing here?

Re:I've never had IE malware

[scubacuda]

What happens when you go here [coreorbit.net] with IE?

Re:I've never had IE malware

[mrbcs]

k, that was cool. Which wonderful exploit is this?

The girl looks fine in Netscape though.

Re:I've never had IE malware

[scubacuda]

Not sure, but there's a whole discussion about it here [slashdot.org].

All you need is common sense.

[ichigo]

Seriously all you need is to use your brain and think. The problem is many users tend to install stuff without a second thought it's like inviting a stranger to your house.

Re:All you need is common sense.

[Phil246]

you also need something non-microsoft.
Something which doesnt let things install by themselves, and as Administrator a-la-exploit ( and theres plenty already, and probably more to come, before you "get sp2" fanboys start shouting )

Re:All you need is common sense.

[SlimFastForYou]

Sadly, a whole lot of computer users don't even know how to install a program. So whenever the computer asks something, yes is chosen because it typically means the computer wants to do something and the user thinks the computer wants to do something for a good reason. e.g. Would you like to save changes to stuff.doc?

So when the computer brings up an IE dialog box that says, "Choose yes to block pop ups", these users say yes.

Should these users know better? I think so. Do they ever learn? I think eventually. In the meanwhile, the IT guy or the local computer shop has to deal with it. It's a sad fact, but spyware is probably the number one money maker for comptuer shops.

Re:All you need is common sense.

[gazz]

if they learned immediately, there'd be no job for the IT guy. :D

Re:All you need is common sense.

[Taladar]

That's like saying "If there were no accidents there'd be no job for the Ambulance driver."

Re:All you need is common sense.

[salvorHardin]

That's like saying "If there were no accidents there'd be no job for the Ambulance driver."

Or the lawyer, chasing close behind it

...and a more intuitive configuration UI

[TFGeditor]

The IE "advanced options" is, to the average use, cryptic in the extreme. A simpler Options interface such as found in Opera and Firefox--though still beyond many users--is a huge step in the right direction. Options should address the lowest common denominator: "Do you want to allow the Internet to download software onto your computer without permission?" And like that.

Note the word "Internet" rather than "websites." Like I said: lowest common denominator.

Re:All you need is common sense.

[John Bokma]

Should these users know better? I think so.

I think not. From a certain view point it looks easy, educate the users. But most of those users that should be educated (according to many people) most are just not able to understand the basics that could make their systems more safe. Like not everybody is able to go to the university if you give them the books and sufficient time.

Re:All you need is common sense.

[ansleybean]

I work at a small computer shop, and spyware/adware is the #1 reason we get customers in. Most of the time people fell for the popups saying "Your computer is infected with spyware - do you want to remove it?" *click* Within an hour there are 5 different versions of coolweb installed.

Re:All you need is common sense.

[bloodredsun]

What you need is something secure by default! Or at least something that doesn't walk around with its trousers round its ankles and a big sign saying "Get it here!"
I can't remember the number of times I've been dragged out to a friends house because their computer has gone pear-shaped due to malware (on windows systems admittedly as the only other OS I know about is Solaris and you don't see many of those on home PCs!).
Then installing Firefox, ZoneAlarm, Ad-Aware, Stinger, an anti-virus and a reg-clean

Re:Malware is a Windows problem

[pturing]

I love me some arachne [arachne.cz]
on a good connection, arachne on a 386 is actually not bad

Re:Malware is a Windows problem

[MysteriousPreacher]

LOL.

Reminds me of a sysadmin at a place where I used to work.

Me: My CD drive is broken.
admin: Why do you need a CD drive?

Me: My space bar doesn't work.
admin: Why do you need a spacebar?

And so on....

Re:Malware is a Windows problem

[TheGavster]

Gentoo isn't exactly easy to get installed the first time. Particularly if you've been a Windows user for life, watching pages of compiler messages fly by isn't exactly an inviting experience.

MOD PARENT UP.

[Anonymous Coward]

Gentoo is a lot of things, but perhaps not best for a first distro. You are correct. i mean, /usr, /home, /wtf? are strange when you see them for the first time (/wtf especially). But in all seriousness, there is something that gentoo did for me that no other distro (at that point) had done for me: really taught me about linux and how/where things are (RedHat and other drop-n-go distro's didn't force me to up to that point). Gentoo really, really made me learn.

Re:Malware is a Windows problem

[LardBrattish]

Let's break this down and address both of your points:-

Gentoo isn't exactly easy to get installed the first time.

But it's a damn sight easier than it has any right to be. The instruction guide is exemplary. I wouldn't be pushing a Windows (L)user at Gentoo. Let them play with Mandrake, SUSE or someting similarly automated & quick to install.

Particularly if you've been a Windows user for life, watching pages of compiler messages fly by isn't exactly an inviting experience.

I installed Gentoo

Re:Malware is a Windows problem

[lachlan76]

I agree, except I'm 15, and had just been rejected, had a fairly serious neck injury, and a lot of painkillers.

Gotta have something to keep it all coming during the holidays, so I figured, why not continue making my life hell? For the next week, I compiled it, having to repeat often, because the power kept going out.

The documentation made it easy though, and after recompiling the kernel a few times, to get my config perfect, I had it running.

But yes, it taught me a huge amount about Linux....6 months

Re:Malware is a Windows problem

[TheGavster]

This is someone's only computer. They need it right now to be usable for what they do. They are not a computer scientist; they could care less how it works, simply that it does. Much as you use your car, but don't really want to get involved with selecting your valve timings and fuel mixtures.

Re:Malware is a Windows problem

[pcmanjon]

"They are not a computer scientist; they could care less how it works, simply that it does."

But it doesn't with spyware on it. They dont care how to remove spyware or how it works, simply that it doesn't work on their system.

GENTOO FOR THEM!

Re:Malware is a Windows problem - Today

[nurb432]

Any OS that has 90% market share will get their share..

Sure, *nix may be a bit more secure by nature, but it wont stop users from hosing up their home directory by clicking 'yes'...

Re:Malware is a Windows problem

[rafikki]

"the less spyware problems our department will have" Until it becomes worth the time of the spyware makers to find some way to exploit Linux.

Re:Malware is a Windows problem

[goofyheadedpunk]

Well aren't you the least helpful help desk guy ever? Do you think that if the so called "lusers" can't keep viri and spyware off of their Windows boxen they could possibly hope to install Gentoo?

"Hmm... I didn't know anything about my magical beige box before, but now with Gentoo I suddenly know exactly what a partition scheme and compiling are, and I haven't even popped the disk into the music slot on my computer yet!"

Being a jerk helps nothing.

Re:Malware is a Windows problem

[goofyheadedpunk]

Please don't blab the standard Gentoo fan boy lines at me. I'm a Slackware user currently rolling my own system from scratch. I know low level like it's an annoying cut on the end of my finger.

And you know what? Suprisingly, most people don't want to forced to learn how their computer works. Most people are quite contented to have a magical beige box that periodically brings forth web pages and music.

My Dad couldn't care less that /dev/dsp is now depriciated, and that the 2.6.9n kernels have an interestin

Re:Malware is a Windows problem

[deaddeng]

What is the "Redhat" and "Suse" of which you speak?

I used to use a linux distribution called RedHat Linux, but sadly it is no more. I was going to switch to Suse but it longer is with us either except as an unsupported box of disks.

So far as I can tell, the only supported Linux distributions out there for consumer-level users are Mandrake, the silly Lindows things, and community-supported ones like Gentoo, Debian, and Slack. Fedora and Suse are now cruel jokes so that mega corps (RH and Novell, respecti

mod parent troll

[sinner0423]

university helpdesk does not equate to passing out linux and telling the end users to piss off.

parent is a troll, don't even bother.

Re:Malware is a Windows problem

[linguae]

If a student or member of faculty comes in with malware problems for the first time, I fix it for them and I give them a Gentoo Linux install CD to go away with.

Gentoo? For general, non-geek, Windows users? Maybe something easier, such as Mandrake or Ubuntu, but if they cannot keep malware off their computers, there is probably no way they're able to install Gentoo, let alone any other Linux distribution. Rather, you should give them a suite of the following:

• AdAware
• Spybot Search and Destroy
• Hijack This
• a decent firewall
• a decent anti-virus application
• Firefox
• A pamphlet about computer security

There. That should solve nearly all of their malware problems without having to move to another OS.

Linux is an OS immune to these kinds of problems.

*nix may be immune to Windows worms, viruses, and other scum, but it surely isn't immune from clueless lusers. Now, I'm not a MS apologist; I am a FreeBSD user. However, if *nix gets a clueless user base and starts doing stupid things (such as running as root), then all they have to do to get thier computers hozed is for someone to download "Free Britney Spears screensavers for Linux," which turns out to be nothing more than a script that has "rm -r /*" in it. *nix may be more secure than Windows, but it isn't "foolproof," either.

Re:Malware is a Windows problem

[mdrjr]

this can be resumed in two topics: - Read before take any action - Don't trust on miracles.

Nice Review

[gazz]

Well reviewed, my good man/woman/thing...
It's good to see a seemingly well thought out book on the topic of detection and removal of "malware".
The majority of tech calls I get from family and friends involve something malicious or just downright irritating landing on someone's computer (strangely, usually a Win32 box...well, not that strange, considering...), which I end up having to track down and de-couple...which can sometimes be a rather lengthy process, especially where the offending piece has been based on some of the older, smarter virii which spread themselves all over the place just to make sure it takes you a clean floppy or about 4 reboots to remove (re-deleting each re-replaced thing each time). *remember to breath, gazz*

I've longed for a return to the days when I used to only find a blown PSU.....like, 1996....

Good to see chapters on general system "hardening" as well as some more in-depth stuff.

Saying all that, it can be great fun cleaning out a "scr00d" system.

Re:Nice Review

[gazz]

umm,
s/(breath)/$1e/;

Re:Nice Review

[TCM]

s/breath/&e/ is cheaper

Re:Nice Review

[gazz]

Do you mean:

s/breath/$&e/

?

Re:Nice Review

[akgoatley]

Alternatively, he could do s/breath/\1e/;

Re:Nice Review

[TCM]

No.

$ echo breath | sed 's/breath/&e/'
breathe

Re:Nice Review

[gazz]

ahh, I guess I should have specified my Perl addiction....

There's a reason...

[eeg3]

Both Windows and Linux are covered, true, but that's not a very broad slice: Solaris, HPUX, BSD, Tru64 and OS X barely get a mention.

There's no point in wasting time developing worms for Solaris, HPUX, Tru64, etc. The work to reward ratio is too low. Not to say writing a worm, etc. is rewarding, but that's like developing anthrax that only kills people with webbed feet.

Re:There's a reason...

[FrYGuY101]

One of these days, when the Polar Ice caps melt, it'll be us versus them... I have *MY* Webbie killing Anthrax... You all mock me, but I SWEAR I'll have the last laugh!!!

Fighting Malicious Code?

[Timesprout]

I know kung fu.

Re:Fighting Malicious Code?

[Spy der Mann]

In case you guys didn't notice, this is a Matrix reference.

Re:Fighting Malicious Code?

[AndroidCat]

That was that cat movie [selfdestruct.net] right?

Re:Fighting Malicious Code?

[hunterx11]

No, you don't.

Re:Fighting Malicious Code?

[diquark]

Show me!

I used to tech support

[Psychofreak]

When I was a university student, the school had a site liscence for Norton Antivirus. As a student you could install it free of charge, and it would LiveUpdate as well to stay current. In fact LiveUpdate was just out and a new good thing. The key was that having a defense against a "majority" of malware as seen by most was not enough. Users still required education on what was causing their problems. Most users did not want the time to learn about security on their machine. This meant that people were hacking other boxes on campus, people were setting up malicious websites on their own machines, people were setting up malicious websites using university resources. (my favorite was a java script "Click here for a good time" and it would try to format the harddrive!!)

The university then started a newsletter that all tech support staff, department heads and administrative staff were supposed to subscribe to. This newsletter would detail technology happenings on campus, planned outages, maintence, a short security blurb, calls open/closed/pending, a blurb about not opening attachments unless you know the source, and much else.

There were always some warnings about attachments and security on the internet.

Several one-shot free classes were set up for all people at the university. Show up, learn about WHY you don't surf porn. Learn why all these things that were "bad" are considered such.

After about 2 years of this the major problems with viruses and infected attachments started noticabling dropping off to the point of very few calls were about a virus type issue..only a few a week instead of a few a day. Then I graduated.

I understand that most tech staff cannot schedule resources like a university can, but having a tech newsletter for an organization is good, as well as having tech instruction to the low level usere who don't see anything other than a magic box of fun!

Having books like this is an obvious good thing, and I may consider going and getting a copy even though I am not doing tech support anymore.

Phil

Most security related books

[dfiguero]

I've read usually don't offer anything other than: a list of tools and a small description of the man page + common tips like set up a firewall, patch your system, get an AV, be on the lookout.

It's not common finding books that really cover a particular subject in depth.

Worms aren't the half of it....

[Smiffa2001]

Nice review, might try to pick that up if it's stocked here in Blighty.

As everybody else has a clean-out-a-friends-system tale, heres mine:
The aforementioned friend/work colleague asked me to pop round and have a look at his WinXP system. It had been 'running slowly' and he 'couldn't get the internet to work'. Armed with the usual clutch of CD's in case of "bad things"(tm) I took a look. Nothing worked. Control Panel and the Device Manager being the most obivous. I check the services and discover that nearly all of the services had been disabled. After putting things as they should be, I interrogated said friend and found out that he'd followed some instructions from 'another guy' to make his system run quicker.

Sometimes I wonder if you should have a test to operate/own a PC...

Re:Worms aren't the half of it....

[alib001]

Sometimes I wonder if you should have a test to operate/own a PC...

From your description it appears that the test was practical-based and your friend failed. The result being he effectively revoked his own privileges as a user - usable speed, 'net connection etc.

Sounds like the test worked just fine. Would that this self-policing outcome be the default for all ignorant people using computers and the clueless simply disconnect themselves from the Internet.

Re:Worms aren't the half of it....

[Smiffa2001]

What can I say, I wish I'd have thought of his 'problem' in that way...

I found this book interesting and useful...

[OneInEveryCrowd]

...even for non-professional home user types like me. This was also the only computer book I read straight through in a decade or so. Usually I just read the chapter or two that applies to me and then put the thing down.

The reviewer mentioned the lack of detailed instructions for firewalling. I don't see that as a drawback at all, there are plenty of books that cover that subject in detail.

The part I liked the most was malware analysis section. If you're the type of home user who wants to know exactly what a spyware app like Gator (or whatever they renamed it) does, this is exactly the info you need.

SANS Track

[rainbird]

I have not read this book but I have taken Ed's SANS Track 4, Hacker Exploits, while it was in Minneapolis. He is an amazing guy. I got more information in that five days than I think I ever have in any other five day period in my life. It was pretty much an eight hour day of Ed talking (very fast) in the front of the class. The information presented kept the whole thing really interesting. If my book budget was a little bigger I would buy the book with hopes of more of the same.

One thing the review d

Virus Source Code

[totallygeek]

For anyone interested, check out the Virus Source Code Database [totallygeek.com]. For historic reasons, it is worth taking a look at, whether you are into Assembly, Pascal, C, or others on Unix, DOS, Windows, Mac, etc.

why no firewall? that should be obvious.

[gblues]

Why then in 700 pages is there barely a mention of how to configure a firewall?

Probably because a firewall has fuckall to do with with malware? Malware is an Application layer issue, and while Network/Transport layer security may help mitigate damage, it's not going to keep Clicky McFucktwit from opening GOODTIMES.EXE attached to his e-mail.

Nathan

Re:why no firewall? that should be obvious.

[mcrbids]

Malware is an Application layer issue, and while Network/Transport layer security may help mitigate damage, it's not going to keep Clicky McFucktwit from opening GOODTIMES.EXE attached to his e-mail.

I am amazed that you would choose my family name as some sort of pseudonym for stupidity. I mean, nobody in my family would ever, in their right minds, even use EMAIL let alone click on some file called "GOODTIMES.EXE" We all know that it's "goodtimes.EXE" - next time get the case right, you pompous, self-serv

Malware Prevention Is Simple

[rinkjustice]

I don't need a 700 page book to prevent malicious code. I would guess 80%+ of all malware could be avoided by following these four words:

Stop visiting porn sites

It's true, the majority of people who have malware infected pc's are those who frequent porn sites. Even more malware can be avoided by using common sence and not rushing software installations. Custom installs and skimming the EULA's can spare alot of headaches (and cpu cycles).

I'm not knocking the book. It sounds like a hardcore read for geeks, but Malware wouldn't be such a huge problem today if morality and common sence weren't in such short supply.

Re:Malware Prevention Is Simple

[a24061]

Stop visiting porn sites

What would happen to the internet?

Re:Malware Prevention Is Simple

[kjamez]

Stop visitng porn sites

it's not quite so cut an dry. search for ANYTHING of 'questionable' nature (cracks, walkthroughs, mp3s, etc) on the web and you are likely to encounter a site that has a pop up that takes you to a pron site that when you close the window it opens three more; repeat; exponential growth. one of those sites is likely to have malware sneak in while you are busy clicking x's. granted, stop visiting porn sites intentionally would cut a lot out, but avoid porn on the interenet is no easy

How I handled malware in a challenging environment

[pturing]

I used to administer 4 computer labs of 25 systems each at a major university. This involved untrusted users having unsupervised anonymous physical access.

Here's what I had set up:
1. Set the machines to power themselves off in the afternoons and on in the morning.
2. Set up a reasonable security policy; enough to prevent the lesser script kiddies from installing anything.
3. Here's the key: Ghost the labs on a regular basis. Since it uses multicast, if you've got a box of floppies and a couple of monkeys to