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Let's continue with getting started with cybersecurity in this lecture, you will learn to describe

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what is cybersecurity, then you will see the standard definition of cybersecurity and finally, some

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eye opening facts related to security and attacks.

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So what is cybersecurity?

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In the last lecture, we saw the definition of security, according to Kaspersky, cybersecurity, it

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is the practice of defending computers, servers, mobile devices, electronic systems and networks

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from malicious attacks.

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With the introduction of the computer, the need for automated tools for protecting files and other

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information stored on the computer became evident.

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This is especially the case for a shared system such as timesharing system, and the need is even more

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acute for systems that can be accessed or public telephone network.

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Cybersecurity refers to a set of techniques used to protect the integrity of networks, programs and

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data from attacks, damage or unauthorized access.

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These are the standard definitions, according to NIST, that is National Institute of Standards and

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Technology United States.

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They define cyber security as the protection of information systems from unauthorized access use, disclosure,

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disruption, modification or destruction in order to provide confidentiality, integrity and availability.

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Confidentiality, integrity and availability are the three terms of the information security element.

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We will explore these stones in upcoming lectures, according to the government of the United Kingdom.

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Cybersecurity is the application of technologies, processes and controls to protect systems, networks,

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programs and data from cyber attacks.

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If you observe closely to these definitions, you may find out one common thing that is protection of

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something from something using computer technology.

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And that is nothing but cybersecurity.

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Here, here are some things that you shouldn't really understand before actually learning concepts,

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68 percent of the business leaders feel their cybersecurity risks are increasing.

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Worldwide spending on cybersecurity is forecasted to reach one thirty three point seven billion dollars.

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As we have seen in the last lecture about the disk based data breaches, we can see that ninety seven

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point nine records were exposed to.

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The top malicious attachments are dot, dot, dot, dot, dot, so which means that even if you have

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received an e-mail which consist of dot, dot, file, it may be a virus.

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So you have to actually have the knowledge before downloading a thing from any random source.

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This is more terrifying.

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Hackers attack every 39 seconds, which means between our lecture, they must have attacked five times,

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which is equivalent to average 2000 times a day.

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64 percent of Americans have never checked to see if they're affected by data breach.

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I mean, and this is why people need to understand cybersecurity.

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In 2018, Under Armour reported that it's my fitness pal was hacked, affecting 150 million users.

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Now, not a fitness app is hacked.

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They get to know everything about the diseases and again, you know, diseases than if they have any

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dietary restrictions, the accounts, the names, passwords, everything.

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And this can be devastating.

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So in this lecture, we saw what is the definition of cyber security.

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We also saw the standard definition of security.

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And at the end we saw some interesting facts.

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And I hope these facts have opened an eye and it's time to start learning about security in the next

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lecture.

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We will see then was the first cyber attack carried out in this world.

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So let us study the history and applications of cybersecurity.