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">
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class="archive category category-glossary category-17 wp-theme-quadra_biz001 use_header_fix use_mobile_header_fix aa-prefix-taiku-">

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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/certification-authority/">

第119回：CA（シーエー）

CA（Certification Authority）CAとはCertification Authorityの略、認証局という意味になります。公開鍵暗号方式と、それを用いたデジタル署名は、インターネットのような不特定多数を相手に通信する環境下にあって、「盗聴」「なりすまし」「改ざん
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/digital-signature/">

第118回：デジタル署名

デジタル署名（digital signature）インターネットのように不特定多数が利用するネットワークで通信を行う際、その経路上に存在する危険は盗聴だけではありません。無事にデータが届いたと見せて、実は「やり取りするデータが途中で改ざんされている」恐れもありますし、そもそも「やり取りする
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/public-key-cryptography/">

第117回：公開鍵暗号方式

公開鍵暗号方式（Public-key cryptography）インターネットのように不特定多数が利用するネットワークで通信を行う際、その経路上には「やり取りするデータが盗聴される恐れ」が常につきまといます。この時、「盗聴されないように」ではなく「盗聴されても中身がわからないように
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/private-key-encryption-system/">

第116回：秘密鍵暗号方式

秘密鍵暗号方式（private key encryption system）インターネットのように不特定多数が利用するネットワークで通信を行う際、その経路上には「やり取りするデータが盗聴される恐れ」が常につきまといます。この時、「盗聴されないように」ではなく「盗聴されても中身がわか
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/social-engineering/">

第115回：ソーシャルエンジニアリング

ソーシャルエンジニアリング（social engineering）ソーシャルエンジニアリングとは、コンピュータシステムとは関係のないところで、人の心理的不注意をついて情報資産を盗み出す行為のことです。ユーザ認証をしっかり行い、セキュリティホールを塞いだ厳重なシステムを作っても、それ
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/unauthorized-access/">

第114回：不正アクセス

不正アクセス（unauthorized access）不正アクセスとは、あるコンピュータに対して、本来はアクセスする権限を持たないはずの人が、インターネットやLANなどのネットワーク回線を通じて侵入する（もしくは侵入を試みる）行為のことです。不正アクセスの目的は、大きくは「データや
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/computer-virus/">

第113回：コンピュータウイルス

コンピュータウイルス（computer virus）コンピュータウイルスとは、他者のコンピュータに入り込んで、なんらかの被害をもたらす不正なプログラムのこと。通産省の定義によると、「自らの機能、もしくはシステムの機能を利用して、自らを他のシステムにコピーして伝染する機能（自己伝染機能）」「
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/sim-subscriber-identity-module-card/">

第112回：SIMカード（シムカード）

SIMカード（Subscriber Identity Module Card）SIMカードとは、携帯電話機本体に差し込んで使うICカードのこと。契約と同時に携帯電話会社が発行するクレジットカードサイズのもので、そのICチップ部分だけを切り離して使用します。SIMカードの内部には固有のID番
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/congestion/">

第111回：輻輳（ふくそう）

輻輳（congestion）「輻輳（ふくそう）」とは、物が1カ所に集まって混み合うという意味の言葉です。通信の世界では、「回線が混み合う」という意味でこの言葉を用います。たとえばチケット予約で電話が殺到した結果、「ただいま回線が混み合っております、しばらく経ってからおかけ直しください」など
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hover_animation_type3" href="https://vpn.taikutsu-mccartney.com/tethering/">

第110回：テザリング

テザリング（tethering）テザリングとは、スマートフォンなどの高機能端末が持つ機能のひとつです。この機能を用いることで、スマートフォンを外付けモデム、もしくは無線LANのアクセスポイントとして動作させることが可能となり、他のコンピュータに対してインターネット接続を提供できるようになり

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TOP

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