कंप्यूटर सिस्टम में ट्रोजन हॉर्स (Trojan Horse) से मुख्य रूप से कौन सा खतरा जुड़ा हुआ है?

Arrange the following authentication factors in their progressive logical sequence as applied in a Multi-Factor Authentication (MFA) framework, advancing from basic memorized credentials to dynamic tokens, and concluding with physical traits. A. One-time codes B. Biometrics C. Passwords Choose the correct answer from the options given below:

An unsolicited email message sent to many recipients at once is known as ________.