WEBVTT

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In this video, we're
talking about antiviruses

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and console tools.

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So "ransomware damage costs will
rise to $11.5 billion in 2019

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and a business will fall victim
to a ransomware attack every 14

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seconds at that time," according
to Cybersecurity Ventures.

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So that's a pretty big number.

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That's a lot of money.

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And for every 14 seconds,
there's a ransomware attack.

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So how easy is it
to create a virus?

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Well, let's take a look.

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So this is a very simple virus.

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It's called a fork bomb virus.

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And I'm creating it
with a text document.

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So I don't recommend
doing this, but this

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is for demonstration
purposes only.

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So I have a text document.

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I'm just going to
name it forkbomb.

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And in the text, you
could use any editor.

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We're going to zoom
in here to make

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it a little bit easier to see.

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I'm simply going to put
forkbomb.bat on there.

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And then I'm going to save
the file as a batch file

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and name it the same thing.

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OK, then we save it.

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And this is now going
to be a batch file.

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So when we run
the file here, you

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can see it trying to open itself
over and over and over again.

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And what this
essentially does is

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it's similar to a denial
of service attack.

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It's constantly trying
to open itself out,

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and eventually, I'm going
to run out of resources.

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Now, I can kind of
bloat this thing up.

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I can add some
additional files in there

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and have it run over and
over and over again, speed up

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the process a little bit.

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I could have it open up multiple
files, multiple strings.

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And the same thing is
going to happen eventually.

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It's going to open
so many things.

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It's going to tie up
so many resources.

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The computer is eventually
going to slow down and crash.

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And that is a
really simple virus.

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I just used a text document,
and I put one line in there -

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forkbomb.bat - and
named it the same thing,

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saved it as a batch file.

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But that's an example
of a very simple virus.

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So there's a lot of different
types of viruses out there.

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There's ransomware,
scareware, Trojans, worms,

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polymorphic viruses - a
lot of different viruses

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out there doing a lot
of different things.

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Well, on the security
side, there's

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no shortage of antivirus
software out there

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- AVG, ESET, ClamAV,
Panda, Windows Defender.

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There's a lot of antiviruses.

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And there's free versions,
and there's paid versions.

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And it doesn't matter
what computer you're on.

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If you're on
Windows, Linux, OS X,

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you should have an
antivirus, and there

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is an antivirus out there
for your operating system.

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Now, the argument I
used to hear from people

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is - "Well, I'm on Linux.

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I don't need a antivirus.

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I am on Mac.

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There are no viruses."

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Truth of the matter
is there's viruses

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for every type of
operating system.

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And the more popular that
operating system becomes,

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the more enticing it becomes
for malicious hackers to attack.

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This is why we need to
have an antivirus installed

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on our computer.

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Now, again, there
are free and paid

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versions of a lot of
the software out there.

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And again, Linux,
Windows, OS X, they all

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have antiviruses that are going
to work with that operating

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system.

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Most antivirus software nowadays
will also scan for malware.

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The majority will also
scan for ransomware.

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Some - mostly enterprise
level - antiviruses

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will have some sort
of online console

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that we could view our
protected machines.

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Enterprise antivirus
software will generally

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also have more
features and allow

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for things like remote
install of their software.

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They can remotely
view computers,

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initiate antivirus scans,
clean computers remotely,

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alert you when something
happens, things like that.

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Antivirus software is also a
simple and oftentimes cheap way

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of protecting your network.

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After all, there's a lot of
viruses out there - viruses,

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worms, ransomware, and whatnot.

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In addition to having
things like your computer

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patched, your users locked
down, antivirus software

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is just another
piece of software

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you can have to have an extra
layer of protection there

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that's really worth having.

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