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There's a principal security called defense in debt.

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The idea is to provide layers of defenses.

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So one defense fails another continues to protect you in its place.

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So there are three main types of defenses you can think of.

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So prevention is the first.

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This for example can be if you encrypt your files and make sure the key or password isn't available

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to prevention defense to stop people compromising those files and accessing confidential information.

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The next is detection detection could be you set up something called the canary which is planting a

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deliberate trap so that a hacker or malware triggers this canary or trap.

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So you are notified that something is amiss and the next is recovery.

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Recovery is like back up or having the ability to recover a lost file or lost account.

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The principle is what you cannot prevent you detect what you cannot detect you recover from through

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the course we will employ the principles of defense in depth having multiple defenses at each stage

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on assets.

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We want to protect this isn't complex.

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It's simply a case of changing your behavior maybe if needed and using the right technology in the right

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place to provide you with that defense in-depth approach.