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
explain to me how a computer virus can be contracted.
user
computer viruses can be contracted in various ways. common methods include downloading files from untrustworthy websites, opening email attachments from unknown sources, and visiting websites that contain malicious code. additionally, sharing unsecured computer systems with others can allow for the virus to spread from one system to another.
assistant