ゼロデイ攻撃とは

ブラウザやwebアプリケーションのシステムのセキュリティの穴(脆弱性)が発見され、修正が入るまでの無防備なタイミングを狙って攻撃を仕掛ける手法。
webページの乗っ取りや閲覧者を不審なページへ誘導、フィッシングメールなどの被害につながる。
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