文学・語学
Zero Trust: Never Trust, Always Verify Zero Trust is a modern security approach that says "Never automatically trust anyone or anything — always check!" It's like having security guards check everyone's ID, even people who work in the buil…
YARA: The Virus Detective's Pattern Book YARA is a special tool that helps security experts find and identify malware (bad software). It's like a detective's notebook that describes what different criminals look like! What is YARA? Imagine…
X.509: The Digital ID Card X.509 is a standard format for digital certificates — like an official ID card that proves a website or a service is who they say they are on the internet. What is X.509? Imagine someone says "Hi, I'm the real ba…
WAF: The Shield That Protects Websites WAF stands for "Web Application Firewall." It’s like a **security guard** standing in front of your website, checking all visitors before they enter! What is a WAF? Imagine a large office building wit…
VLAN: Building Separate Neighborhoods in a Network VLAN stands for "Virtual Local Area Network." It's like dividing one big network into smaller, separate groups — just like creating different neighborhoods inside a big city! What is a VLA…
URL Filtering: The Internet's Security Guard URL Filtering is like having a security guard at the entrance of the internet who checks every website before letting you visit it. If a website is dangerous, the guard says "Stop! You can't go …
Token: Your Digital Ticket A token is like a special temporary ticket that proves you're allowed to do something. It's used in computer security to keep you logged in safely without sending your password over and over again! What is a Toke…
SSL/TLS: The Secret Envelope for Your Information SSL and TLS are special technologies that protect your information when it travels across the internet. They're like putting your message in a locked envelope that only the right person can…
Rootkit: The Invisible Spy in Your Computer A rootkit is a sneaky type of malware that hides deep inside your computer and makes itself invisible. It's like a burglar who not only breaks into your house but also erases all the security cam…
Quarantine: Putting Sick Files in Isolation Quarantine in cybersecurity means putting suspicious or infected files in a safe, locked place where they can't cause harm. It's just like when sick people stay home so they don't make others sic…
Penetration Testing: Friendly Hackers Testing Your Security Penetration Testing (also called "Pen Testing") is when good guy hackers try to break into your computer system ON PURPOSE to find weak spots before bad guys do! What is Penetrati…
OAuth: Lending Your Key Without Giving It Away OAuth is a special system that lets you share access to your information without giving away your password. It's like letting someone borrow your toy without giving them the key to your whole …
NIST: The Rulebook Makers for Cybersecurity NIST stands for "National Institute of Standards and Technology." It's a special organization in the United States that creates important rules and guidelines to keep computers and information sa…
MITM: The Sneaky Spy in the Middle MITM stands for "Man-in-the-Middle Attack." It's when a hacker secretly gets between you and the person you're talking to, listening to everything you say! What is a MITM attack? Imagine you want to send …
Log: The Computer's Diary A log is like a diary or journal that computers keep. It writes down everything that happens so we can look back and see what occurred! What is a log? Imagine you keep a diary where you write: "Monday 9:00 AM - Wo…
Kerberos: The Three-Headed Guard Dog Kerberos is a special system that checks if you are who you say you are when you log into a computer network. It's named after a three-headed dog from Greek mythology that guarded the gates of the under…
Jailbreak: Breaking Free from Rules Jailbreak means breaking out of the rules and restrictions on your device. It's like escaping from jail - that's why it's called "jailbreak!" What is jailbreak? When you buy a smartphone or tablet (like …
IDS: The Security Alarm for Computers IDS stands for "Intrusion Detection System." It's like a burglar alarm for your computer network that watches for bad guys trying to break in! What is IDS? Imagine your house has a security alarm. If s…
物理隔離を破るテンペスト攻撃と国家機密漏えいの危機を描いた物語ですボブ・ディランの『Like a Rolling Stone』が、ラジオから流れていた。2028年のソウル、漢江を見下ろす高層ビルの一室。韓国期待の女性大統領候補、キム・ミョンヒの選挙対策本部だった…
Hacking: Breaking Into Computers Hacking is when someone breaks into a computer system without permission. It's like picking a lock to get into a house that isn't yours! What is hacking? A hacker is someone who tries to get into computers,…
GDPR: Protecting Your Personal Information GDPR stands for "General Data Protection Regulation." It's a big, important rule that protects people's private information in Europe! What is GDPR? Imagine someone takes your photo, writes down y…
Firewall: A Guard at the Gate A firewall is like a security guard that stands at your computer's door and decides who can come in and who must stay out! What is a firewall? Imagine your house has a front gate with a security guard. The gua…
Exploit: Finding and Using Weak Spots An exploit is like finding a crack in a wall and sneaking through it! What is an exploit? Every computer program is made by people. Sometimes, people make mistakes when they build programs. These mista…
DNS: The Internet's Phone Book DNS stands for "Domain Name System." It's like a giant phone book for the internet that helps your computer find websites! What is DNS? Imagine you want to call your friend, but you only remember their name, …
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: 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: 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 …
杏里。1980年代～90年代のはじめによく聴きました。それからしばらく聴くことはなかったのですが、最近になってまたよく聴くようになりました。80年代のトレンドを牽引したアーティストですが、そのファッションスタイルは、レトロファッションとして再び評…
ビーチボーイズを聴き始めたのは1985年でした。19歳のわたしは、自動車教習所に通いながら、遅々として取得できない単位にちょっと嫌気がさしてました。それでも、世の中の空気はＩＴに侵略されたいまと比べるとずっと軽やかでした。携帯やＳＮＳの情報に左…
漢文のなかでも韓非子の「矛盾」は良く知られているもののひとつでしょう。 楚の国の人で盾と矛を売る者がいた。この人はこれを誉めて「私の盾は頑丈で、これを貫けるものはない」と言った。また、矛を誉めて「私の矛は鋭くて、物において貫けないものはない…
