<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  Provide an overview of the importance of two-factor authentication in computer security. Context: Two-factor authentication in computer security adds an extra layer of security by requiring users to provide two forms of identification before accessing their accounts. Answer: [/INST]It adds an extra layer of security by requiring users to provide two forms of identification before accessing their accounts.</s>