<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:  Describe the function of access controls in computer security. Context: Access controls in computer security function by limiting the privileges of users to access certain resources based on their roles and permissions. Answer: [/INST]It limits the privileges of users to access certain resources based on their roles and permissions.</s>