<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 concept of data encryption at rest. Context: Data encryption at rest encrypts data while it is stored on a device or server. Answer: [/INST]It encrypts data while it is stored on a device or server.</s>