WEBVTT

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Why are we encrypting at all.

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Well generally speaking we want to protect private and business data from being accessed by unauthorized

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individuals.

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This applies in general for files images you text declaration customer data master data financial data

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credit card data business plans blueprints whatever you can think of that is stored on a computer.

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Unauthorized access can take place locally or remotely local would mean someone directly accesses your

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computer or laptop smartphone tablet or a SD card flash card or use C-Drive remote access would be by

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sniffing into your Internet traffic via HTP or your mail server or any data you have in cloud services

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or cloud storage as take surfing on the Web as an example.

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When you access a web page via your web browser you should be aware of that.

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About 10 visible hops between your personal computer and an Internet server.

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For a better understanding what it means to surf on the internet.

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I want to demonstrate something.

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Therefore I opened a command console under Windows.

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If you perhaps not know how to do that.

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Under Windows 7 Ohio you can press the windows button on your keyboard to open the start menu and type

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the letters C and D.

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Then you can simply start the program command prompt.

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Alternatively you can press Windows key plus power for run and again type C D and press enter.

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Under windows there exists the tool tray cert which is a trace routing tool using that tool.

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It is simply put possible to trace the route that an infinite packet goes from your computer to a certain

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internet or web server and to display that route.

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I will not explain how this all works in detail important for you understanding is if you surf on the

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internet your computer or device could also be a laptop smartphone template.

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Cetera becomes part of the Internet.

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So part of a computer network if you open the website of a web shop or online bank like Google or Amazon

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you do not have a direct connection to their server or computer.

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However there is a route from your computer to the corresponding server which consists of different

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multiple computers which for what the request of your computer let's take Google dot com as an example

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which is not only used for searches but also for G-mail and the webmaster tools etc..

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As you can see the router of my local network is called Frits box.

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That is the first hop from my PC to the Frits box.

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Next is my internet service provider.

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And then there are many other servers until after a couple of steps.

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We finally reach the actual server of Google.

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If you look at this table it is fair to say the six computers in between.

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I do not know or recognize but all these six computers get in contact with my internet traffic.

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So think for example of making an online banking transaction.

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This is transmitted over all these computers via web.

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Depending on the final computer you want to reach there could be many more computers in between and

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at a different time.

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This could be totally different computers.

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These are not always the same routing on the internet.

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Works dynamically in case one of the computers is not available or there would be some faster route.

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Your next request would go a different route.

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Moreover these computers between me and my destination are only the ones which can be traced and made

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visible by a trace route.

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There surely are various components in between that I can not make visible at all.

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These computers could theoretically be hacked or be administered by a rogue system operators cetera.

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And this is the reason why you want your Internet traffic being encrypted here.

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I cannot even talk about the current media coverage of intelligence agencies accessing data of certain

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Internet services.
