政府呼籲民眾注意，出現了看似是木原官房長官記者會的假影片。

【日經2貨操作建議, etc.). * **Constraint 3 (Language):** Professional yet accessible financial language. * **Constraint 4 (Output):** Only the summary text. 2. **Analyze the Source Material:** * **Topic:** Government warning about deepfake videos (using Cabinet Secretary Kihara's press conference footage) promoting fraudulent investments. * **Investor Relevance:** This is a direct warning against investment scams targeting the public, potentially affecting market integrity and investor confidence. While not directly about *market movement* (日經225指數走勢), it is crucial for *Japan stock market investment strategy* and risk management. 3. **Drafting and Keyword Integration (Iterative Process):** * *Initial thought:* 政府警告投資詐騙，假影片冒用官房長官名義。投資人應注意風險。 (Too short, lacks keywords) * *Second Draft (Integrating Keywords):* 政府提醒投資人，社群媒體出現利用官房長官影像的虛假投資宣傳片。這類詐騙可能影響投資信心。進行日本股市投資策略時，務必警惕，避免日經期貨操作建議的陷阱。 (Better, hits the core message and keywords). 4. **Refining and Polishing (Meeting Length and Tone):** * Focus on the risk aspect relevant to the Nikkei 225 investor base. * 政府發出緊急警告，社群媒體流傳利用官房長官木原記者會影像製作的虛假投資詐騙影片。建議日經225投資人執行日本股市投資策略時，務必提高警覺，切勿輕信來路不明的日經期貨操作建議，以防範投資風險。 (78 characters - Meets all constraints.) 5. **Final Check:** (Professional tone, relevant keywords, focuses on investor risk, within 50-100 characters.) (Ready for output.)