<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 role of penetration testing in computer security. Context: Penetration testing in computer security plays a crucial role in assessing the security of a system by simulating cyber attacks to identify vulnerabilities. Answer: [/INST]It assesses the security of a system by simulating cyber attacks to identify vulnerabilities.</s>