as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
come up with an analogy to explain what a zero-day attack is.
user
a zero-day attack is like a thief breaking into a house without leaving any traces of evidence. even though the homeowner notices something suspicious, it takes them a while to figure out what happened and how to prevent future attacks.
assistant