Tara's computer started performing very slowly, and then a popup locked her computer and notified her that unless she paid $300, she would never have access to her data again. Which of the following BEST describes this attack?

Domain 1: Security and Risk Management Practice Questions
Questions from the following topics are included in this domain:
Basics of security and risk management
    Differing data roles and responsibilities
    Identifying administrative, physical, and technical controls
    Ethics of security professionals
    Administrative policies, procedures, and guidelines
    Object categorization and classification
    Importance of security training