叡智の三猿

〜森羅万象を「情報セキュリティ」で語る

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A to Z Information Security

Cryptography(暗号化):A to Z Information Security

Cryptography: Secret Codes to Keep Information Safe Cryptography is like writing in a secret code! It's a way to hide messages so that only certain people can read them. What is cryptography? Imagine you want to send a secret note to your …

Backdoor(バックドア):A to Z Information Security

Backdoor: A Secret Way In A backdoor is like a secret door that bad guys use to sneak into a computer! What is a backdoor? Imagine your house has a front door that you lock every night. But what if someone made a secret door in the back th…

Authentication(認証):A to Z Information Security

Authentication: Proving You Are Who You Say You AreAuthentication is like showing your ID card. It's how computers and websites check that you are really you!How does it work?When you want to use your computer or visit a website, you need …