<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:  Summarize the role of access controls in data security. Context: Access controls limit who can access specific data, helping to prevent unauthorized users from viewing or modifying sensitive information. Answer: [/INST]Access controls limit who can access specific data, helping to prevent unauthorized users from viewing or modifying sensitive information.</s>