Do you REALLY need to know the difference between malware types?

Explaining Malware Types is Hard To Do

One of the stranger perils of being a technical writer involves being ambushed at odd moments by people demanding on-the-spot explanations of complex technical concepts.  I was out on the town one night and somehow found myself having to explain to a not-too-tech-savvy friend how to differentiate between a virus, a trojan and a worm.

After patiently listening to a lengthy, rambling answer, my friend thought it over for a minute and then asked, “So, why should I care? Why is this important to me? Do I really need to know the difference between different types of malwares?

My automatic reaction was to say, “Of course you need to!” – but to my surprise,  I couldn’t coherently express why I felt that way (though to be fair,  I was having trouble thinking clearly about anything that night).

Thinking it over in the sober light of day,  I realized that he’d actually asked a pretty good question. For most computer users, the difference between malware types is academic and irrelevant – at least,  right up until their computer gets infected. If everything’s working just fine, why in the world should they be able to distinguish between an exploit and a backdoor?

A Technical Person’s Answer

To get a expert’s opinion on this,  I relayed my friend’s question to an Analyst in our Response Lab. His reply was (and I’m paraphrasing here):

“Yes,  so that if anything happens, you’d know how the computer got infected, how to deal with the infection, and how to prevent it from spreading.”

Now, that’s the condensed version of a technical person’s answer. The real answer was actually a long, in-depth and detailed explanation covering how certain malware types had specific behaviors and particular vectors for distribution, as well as recommendations for dealing with particular types of infection.

And that there was the problem in a nutshell – it’s a lot of information to absorb. It was a thorough answer, but not an easy one to communicate to people with little interest in technicalities.  Some parts of the explanation also assumed more computer knowledge than most users would probably have or want.

Having said that, I thought the condensed version of our Analyst’s answer seemed like a helpful, ‘user-friendly’ answer. It summarizes all the main points effectively, puts it in a context most users would understand  and – this is important – it isn’t long-winded. I’ll come back to this again a little later.

Why A User Doesn’t Need To Know Malware Types

Trying to find a simple, all-encompassing answer to my friend’s question made me wonder if he really had a point and that users didn’t really need to know something as technical as malware types. So I decided to turn the question around and ask:

“Are there any cases in which ‘the average user’ doesn’t need to know the difference between malware types?”

The following four scenarios were the only ones I could think of where knowing malware types wouldn’t be helpful (if you can think of others, feel free to leave a comment). Of course,  I included some reasons why I think knowing malware types would be helpful even in these situations.

  1. I don’t do anything that might harm my computer.

    If you can honestly claim this, you’re probably what I’d call an Exemplary User: someone who diligently updates the operating system and programs, never installs programs or uses removable media without thoroughly vetting it first, doesn’t download from untrusted sources and basically, just does computer security right.

    An Exemplary User can laugh with scorn at looming malware outbreaks.  If this describes you, great! You can stop reading now. (Heck, you probably know the malware types already, anyway).

    Since the vast majority of users will never qualify for Exemplary Userhood however (myself included), the second best scenario is:

  2. MY computer can’t be infected.

    No, I’m not starting a PC versus Mac debate. What I mean is that even if malware does get onto your computer, it needs to find a suitable environment before it can have an effect. A Linux virus that somehow manages to get onto a Windows machine usually can’t do anything except blush sheepishly. Ditto for a backdoor that uses HTTP to connect to a remote site but ends up on a standalone computer without Internet acess.

    If your computer happens to be set up so that the majority of malware doesn’t target it or affect it (now you can start the PC/Mac debate), then our query becomes moot. Again, congratulations!

    Of course, most people have very little choice in the kind of operating system or programs they have on their computer, particularly business users. Even home users usually have to consider familiarity and affordability over specifically tailoring their computer to be malware resistant. To fix that, most users use antivirus protection. Which leads to reason 3:

  3. Why worry? My antivirus will remove it.

    Actually, since I work for a computer security company, I’d reeeaaally like it if more people could claim this. And hey – shameless plug – our Internet Security is doing pretty well in independent tests!

    Unfortunately, this solution isn’t 100% bulletproof, especially if you’re not an Exemplary User or are just plain unlucky.  Sometimes, the antivirus doesn’t catch the malware. Or it makes an error and the wrong file get fingered, causing all sorts of mayhem. Worse still, the antivirus turns out to be rogueware.

    In other words, the program you’re depending on to sort out all the problems….doesn’t. What then? Ah, then we move on to reason 4:

  4. Not my department. (IT/Tech Support/the computer guy) will just clean out any infection for me.

    OK, so the person fixing an infected computer should be the one with the technical knowledge, true. That person may not be the user, true. If you have someone dependable, willing and trustworthy, who can fix anything that goes wrong…can I have their number? Such a person is a godsend. Treasure him/her.

    Still, even if you’re that lucky, it’s often a great help to the actual technician if the user can pinpoint the probable cause. Knowing what type of dastardly program is screwing around with the computer gives the technician a good place to start investigating, and maybe also some idea of how to fix it.

    Or, to use an analogy, it’s the difference between driving to a workshop and telling the mechanic, “My car’s making a funny sound”, and saying, “The fan belt’s busted.”‘

And the Conclusion Is…

If you’re not in one of the 4 ‘Ideal Situations’ listed above, then it would probably be helpful for you to know the different kinds of malicious programs that can damage your computer, because…well, refer to condensed Analyst’s answer above.

Realistically though, learning about malware types, even superficially, requires investing time and energy that not every user can spare – which is why technical writers (ahem) have to find ways of communicating these concepts in ways that are interesting and easily accessible for everyone. Which brings us back to the condensed Analyst’s answer. It’s short, to the point and gives just enough information without being overwhelming. And if more information is asked for, well that’s the time to start going in-depth.

Personally, I like it – but since my part of my work deals with malware types anyway, I freely admit to being biased about this. So really, the best people to evaluate how useful that answer is – You, dear reader. So how about it? Do you think the condensed Analyst’s answer is a helpful, informative reply?


Oh and since we’re on the topic, here are the Types F-Secure uses to classify the samples – the good, the bad and the merely suspicious. You can also find plenty of other sites with excellent information on this topic – for example, has great articles explaining how trojans, viruses and worms work.

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F-Secure employee wins Inventor of the Year

20 Patents in 14 Years: How An Award-Winning Inventor Finds His Groove

We wouldn't be F-Secure without the talented and passionate researchers in our Labs. And today we'd like you to meet one whose inquisitive nature has driven him to become an inventor - and a prolific one at that. In his 14-year career with F-Secure, Jarno Niemelä has racked up an impressive 20 patents to his name and has filed 100 patent applications in total. His achievements recently won the title of "Salaried Inventor of 2014" from a group of Finnish inventors' organizations. I sat down to chat with Jarno about where he gets his ideas, and his advice for others. What area do your inventions focus on? I mostly focus on methods to help detect malware on a system, or methods of preventing malware from entering the system in the first place. How do your ideas come about? Inventions mostly happen in the evening when I'm not at work, and not even trying to think about it. I'll be working on some problem at work, and usually a day or two later, when I'm doing something totally unrelated on my own time, it hits me. I understand the problem and come up with a solution. The gym is a really good place for inventions. What motivates you to keep on inventing new solutions?   Inventions just happen, pretty much. Whenever I'm able to define a problem, I'm usually always able to come up with a solution. I am lucky to be researching in areas with problems that others have not yet solved. I'll be honest, I don't really like patents that much personally. The fact is though, that companies without patents would pretty much be at the mercy of the competitors. So in my view, patents are basically company self defense. Patents keep things in balance. Were you curious about things growing up? I've always kind of been inventive. You cannot learn to become an inventor, it's either something that's in your nature or it's not. And then you need to hone the talent and learn how to work within the patent framework. Another thing that is very important is good basic education and knowledge about the field. I owe a lot to Metropolia University of Applied Sciences where I studied for my engineering degree. Do you have any advice for people who have this inventive nature and are interested in filing patents? It all starts from defining and understanding the problem. Without a thorough understanding of the problem, you can't come up with a solution. Also, when it comes to patents, it's important to know what has previously been done in your area, and be clear in exactly how your invention is different from those. Otherwise your patent can be easily rejected by the patent examiner. And finally, patents are a long process so you need patience. It can take three to five years to get a patent approved. So this is not for hasty people. What is that rock you're holding? It's my trophy, a piece of Finnish bedrock! Inventors are the bedrock of new products. Do you have any certain goals for your inventions? Before I retire I would like to have at least 50 patents to my name. - Well, he's off to a great start. Congratulations, Jarno! Follow Jarno on Twitter  

Nov 12, 2014
Free public wi-fi Coffee Shop

Should you use a VPN?

The EFF has put together a handy guide on choosing the right VPN -- virtual private network -- that explains in simple terms why you'd want to use this type of software.   "It enables a computer to send and receive data across shared or public networks as if it is directly connected to the private network—benefiting from the functionality, security, and management policies of the private network," the guide explains. It goes on to clarify the three reasons people typically encrypt their data. Most people already using a VPN do so for the two reasons: They connect to a corporate network remotely or are attempting avoid Internet censorship in countries like China and Iran. But even if you're not using a VPN for business or digital freedom, there is a simple reason why you'd want to use a VPN. "You can also use a commercial VPN to encrypt your data as it travels over a public network, such as the Wi-Fi in an Internet café or a hotel," the EFF writes. I put together this flow chart that explains whether you're a candidate for this third reason to use a VPN: “A good number of open wi-fi providers take the time to tell you in their T&C that there are inherent risks with wireless communications and suggest using a VPN,” F-Secure Security Advisor Sean Sullivan said after we conducted a public Wi-Fi experiment. “So if you don’t take it from me, take it from them.” And even if you aren't on a public network, you may want a VPN to protect you from ubiquitous tracking elements like a perma-cookie. You can try our super simple Freedome VPN solution -- which also includes tracking protection and the ability to set up virtual locations -- free. [Image via Trevor Cummings | Flickr]

Nov 10, 2014