シカゴのホライゾン・ファイナンシャル・サービスでレッドチーム演習が行われていた際、倫理ハッカーのクララは、同社のCEOを騙すためのメールを作成した。法務部からの緊急メモを装ったこのメッセージには、訴訟が差し迫っていることを警告する内容と、CEOの認証情報を要求する偽の社内ポータルへのリンクが含まれていた。
一般的なフィッシングとは異なり、この攻撃は意思決定権限を持つ高位の個人を特にターゲットにしています。
正解:A
Whaling is the correct answer because the scenario describes a highly targeted phishing attempt aimed at a
"big fish"-a senior executive (the CEO). In CEH terminology, whaling is a specialized form of phishing that focuses on high-profile, high-authority individuals (e.g., CEOs, CFOs, directors) to maximize impact. These targets often have access to sensitive data, financial approvals, privileged systems, and strategic communications, making their credentials significantly more valuable than those of typical employees.
The attacker (Clara) uses classic social engineering drivers emphasized in CEH training: authority (impersonating the legal department), urgency/fear (a "pending lawsuit"), and trust in internal processes (a link to a supposed internal portal). This combination is designed to short-circuit normal verification behavior and prompt quick compliance. The inclusion of a credential-harvesting link aligns with common phishing goals: capturing usernames/passwords, enabling account takeover, and potentially facilitating broader compromise (e.g., email access for business email compromise, lateral movement, or privileged escalation).
Why the other options are less accurate: Spear phishing is also targeted, but it is a broader category aimed at specific individuals or groups at any level. The defining clue here is the executive-level target, which elevates it to whaling. Clone phishing involves copying a legitimate email previously received and swapping a malicious link or attachment-this detail is not present. Consent phishing typically abuses legitimate OAuth
/app consent flows rather than a fake portal requesting credentials.