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Continued with types of malware you also have spyware as the name suggests its main purpose is to gather

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information and send it back to the attacker.

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Well to spy the attackers don't generally want to cause damage directly but want to compromise your

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privacy and anonymity based on some agenda that they've got spyware is intelligence gathering malware

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corporations and hacker groups create these as well as governments.

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You can see the article here of alleged U.S. government spyware from the Telegraph worth mentioning

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actually.

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Don't get too hung upon the names and classifications of the malware.

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By the way that we've gone through these are not strict taxonomies for example a rootkit can also be

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a Trojan Horse someone could call spyware virus.

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The point is just to understand the variants that exist and the possible purpose of the malware and

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other one is and where which some people consider to be a form of spyware is undesirable software.

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The forces advertise on you.

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There are millions of different variants of this.

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One of the most annoying and destructive form of adware is called Kou web search.

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You may even encounter it yourself but there's nothing cool about it at all it hijacks your default

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search engine it displays ads in the browser.

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When you click on links it sometimes takes you to places that it want you to go to instead of where

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you want to actually go to and it actively defends itself from being removed and getting rid of it.

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So it's particularly hard to shift.

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And there are many many variants of it that were affected millions of people when an ad where all malware

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takes over your browser in this way is known as browser hijacking.

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And you might hear that term more throughout the course you should always pay particular attention when

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installing software because often a software install includes optional installs such as this browser

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highjacker that we've just mentioned.

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So you can see here.

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Optional installs and what you've got here is installs that are going to be potential Ad-Aware.

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So be very careful what you agree to install.

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Always opt for the custom installation and de-select.

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Anything that is not familiar especially optional software that you never wanted to download and install

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in the first place.

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It goes without saying that you should not install software that you don't trust.

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Sometimes your device might come with and where pre-installed.

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If you're particularly on Lucky One of the worst cases was Lenovo pre-install ING's superficies adware

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that only served you add that based on what it knew about you from spying on you.

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It also included a self-signed certificate allowing your browser TLR and SSL encryption to be bypassed.

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So not very good over and over by our Never bile and over laptop again after that and all the rest of

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the things that were never done scare away.

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Skyway is a type of social engineering attack to trick a person into believing in a threat that isn't

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really real.

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So a common example is fake security software claiming that you have malware infections or something

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like that.

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Often they want you to pay something in order to fix the fake problem.

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These scams have been extremely successful.

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You can see here personal anti-virus software identifying all these fake their abilities and then is

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going to keep popping up.

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It's going to keep causing problems on the machine and then people are fooled into paying for something

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to remove the fake viruses.

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And finally we have this catch all term.

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If it's something that you might not have wanted.

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These are called potentially wanted programs or pull ups that could potentially be monitored because

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the antivirus companies and people the attempt to remove these things aren't quite sure whether you

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want them or not.

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Most often you don't want them and they're annoying the things bundled them with software.

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So again they are often bundling with the software when you install.

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So you must make sure when you install software you go to the custom install and make sure you remove

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any of these pops.