What is Malware? The Most Common Types, How They Work, & How to Easily Avoid Them All

by birtanpublished on August 24, 2020

The total cost of damage caused by malware in 2015 was about 500 billion dollars in 2019 that jumped to two trillion dollars and it's expected to hit six trillion dollars in 2021 to put that into perspective that's more than the entire retail sales of all of the

United States needless to say there is a lot of money being made in cyber crime and malware and it's only going to increase and so I figured for this episode of decoder a series here on the channel where I explain a new piece of

Tech regularly we should dive into what Maur actually is the different types of malware that there are and the ones that you're more likely to run into and then how they work and so with all of that how we can avoid them

really quick shout-out to BitDefender for sponsoring this video as an expert in the anti-malware industry they helped a ton with the research for this video but we'll talk about them more in a sec

Now I want to be clear this video is not meant to try to scare you like a lot of the anti-malware videos that you see on the Internet truthfully the digital and connected worlds that we live in malware is just something that

We're gonna have to deal with and it's actually pretty prominent so I feel like the more we know about it then where we know how it works the better off we are at avoiding it and the less frankly that we have to worry about it

So first off what is malware technically the term comes from a combination of the words malicious and software but that's a pretty broad term I mean by that definition I could include premiere pros I swear it crashes on purpose because

It's evil so bitdefender's definition is software that has a bad intention as far as your personal information computer and operating system are concerned now of course the first type of malware that is associated with that definition are

Viruses but to be completely honest that term and malware get used interchangeably and that's not really right we need to address that real quick a virus is an application that can copy itself by attaching its code to other

Files on the system think like how a cold infects the cell in your body hence the name the worst of these would then do this and spread from computer to computer damaging and compromising the integrity of each infected computer for

Malware to be a virus it needs to be able to infect files in this way and honestly since they corrupt files they are easily identified by computers and anti-malware software so they actually aren't really used very often by hackers

Nowadays they're counting for less than 1% of the global threats according to bitdefender's own studies so while viruses are a type of malware the two terms should not be used interchangeably and actually the chances

Of you coming across a virus nowadays are actually pretty slim so what are the most common mount wear types today that are causing the most damage first up we have key loggers these are essentially the malware equivalent of someone

Looking over your shoulder while you're at the 18 entering in your PIN code to withdraw money this software is installed on an infected computer and intercepts everything you type and puts it into a

Log hence the name along with screenshots and mouse clicks etc in some cases and then sends that log to its owner occasionally essentially giving them your logins for things like your bank

Site ecommerce sites for your credit card info email logins which they can then use to log into other financial accounts etc Franklin key loggers are difficult detect especially on shared computers like in a cafe a library a

Hotel etc and this is why you should avoid logging into anything terribly sensitive on any of these types of computers and on your own computer being careful not to download files from places or people that you don't know can

Help limit your exposure next up is ransomware and this one's become very popular recently it is all over the news according to a study by bitdefender in 2015 ransomware cost 350 million dollars

Worth of damage and some estimates have organizations and individuals paying out over eleven point five billion in 2019 and it is only expected to continue to increase now the idea behind ransomware is essentially that it infects your

Computer and then it proceeds to encrypt all of the data on it so you can no longer view or retrieve it then the program requires you to pay a ransom usually between 300 and 900 dollars in some form of hard to trace currency like

Bitcoin in order for you to decrypt the files and give you access to them again and if that 11.5 billion dollar number is anything to go by there's no wonder that there the malware of the moment currently now the way that they are

Spread is again very similar to other versions of malware here usually in some sort of cleverly crafted email that has an attachment in the form of an invoice a delivery note resumes or some other type of file related to what's in the

Email some ransomware though can also be disguised as advertising banners on some websites that use exploits or known vulnerabilities in usually older versions of browsers and then crash the browser and install their code and some

Have even been found installed in illegal downloads found on popular torn websites as well now of course again be careful of any files through email or sites you don't know where trust but because this malware also has been known

To infect computers in other ways you should take some other precautions as well firstly back up your important files regularly to a drive that is not constantly connected to your computer has a lot of

Ransomware out there is able to encrypt attached storage as well by the way I have a quick list of some super fast and affordable drives that I just did a video on you can check out some of those if you need some recommendations next

Make sure that your computer is completely up to date as well as whatever browser you are using a lot of times they use exploits that are then patched in newer versions of both of these things and so being on the latest

Version can also help besides that vid defender actually worked with the local authorities to provide free decrypt errs for some of the most popular ransomware threats out there and you can check that out at the

Link below another one the most common types of malware that you've probably also heard of is called phishing and technically it's not its own software so I don't know if it's technically malware whatever it's really popular so we're

Gonna include it the idea behind this is that just like the hobby phishing that the name is based on an attacker will send out various emails instant messages and even put links on social networks forums etc in the hopes that someone

Will fall for it click it and end up giving up some valuable information a common example of this is you receiving emails supposedly from your bank it'll have your bank logos on it and other visual cues to make it seem like it is

Actually your bank sending the message it's not and it'll maybe have some sort of threat that if you don't click the link within it and validate some personal info your account will be suspended or something of that nature

Then when you click on the link it takes you to a fake site that looks like the correct one and you'll put in your login credentials for example and then voila the cyber criminal now has that info and can use it access your real bank

Transfer money out of it etc now since they're relying on conning you into clicking a link usually a good way to protect yourself is to just learn to recognize these emails with a few telltale signs firstly the emails

Generally have spelling or grammar mistakes since most of the time they aren't from a native English speaker they're usually not personal since the attacker is again most the time blasting these out to a large number of people

Hoping that some a la fishing again so they'll start with dear sir/madam user etc heck some even start with just deer deer clearly confused about how salutations work in English also a lot of financial

Institutions like banks have policies where they never ask for any information from you via email so automatically there's a good chance that your bank also has that policy and any email coming in pretending to be from them is

Automatically fake if you do get an email like that though and you want to just confirm always do is call your bank's customer support number the one on their actual website don't do anything that's in the email itself and

Just ask them is this real it did this come from you besides that spam filters are your first line of defense and if you're using any sort of modern email service these are already in place and removing some of

These messages before they reach your inbox if any accounts you use support two-factor authentication though you should also use that this is usually in the settings of your account and when turned on it requires a unique code to

Be sent to your phone for you to input every time you log in or there are special Authenticator apps that you can use as well personally I have this on everything and it is a great help in stopping people from gaining access to

Your accounts so there is some of the most common malware out causing havoc today and hopefully this can help you avoid it if you want to learn more about other types of malware BitDefender actually put together a cool resource on

Their blog that I'll link to below now besides the precautions that I mentioned you can of course also install an anti-malware program now of course the one I would recommend is well the defender but you don't have to take my

Word for it you can even check that they one product of the year from av-comparatives getting top marks in all seven tests and beating fifteen other malware companies that you've heard of and best protection and Best Performance

By a V test as well there BitDefender total security twenty twenty is just that photo it has ransomware protection that can actually stop your files for being encrypted advanced threat defense tech

That monitors processes and can easily identify key loggers lurking in the background phishing filters to stop you from accidentally inputting your info where it doesn't belong and even network monitoring prevent

Controls a VPN to keep your data private it works across Android iOS Mac and Windows and more the best part they're under $4 a month for all of it for up to five devices and right now you can use the link in the description and you'll

Even get a four month free trial to see how you like it check it out there guys hope you enjoyed that let me know in the comments below which thought of this video did it teach you anything that would be great let me know also let me

Know any other topics you'd like to see me do code on a future episode if you like this video though please thumbs up better share it greatly appreciated also check out the rest of the channel feel like you see there please subscribe and

Ding the bell next the word subscribe so you get notified when I do new videos as always though regardless thanks for watching

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