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硬盘驱动器在正常工作时会发出机械和电磁噪声，其中含有可资利用的有用信息，能用一定的设备和技术将其截获和还原，从而造成信息失密。本文讨论硬盘驱动器的信息泄漏及其防护技术。
Hard disk drives emit mechanical and electromagnetic noise during normal operation. They contain valuable information that can be used and used to capture and restore them with certain equipment and techniques, resulting in the loss of information. This article discusses hard disk drive information leakage and its protection techniques.