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As more mobile storage devices are used in consumer electronics, possibility of user confidential data leakage increases. To make things worse, data of deleted file in mobile storage such as USB drives can be easily recovered and, thus, can be vulnerable to data leakage. To prevent this type of data leakage, efficient secure deletion techniques are required and we present two secure deletion techniques,...
This paper presents an efficient secure deletion scheme for flash memory storage like USB memory. First, we identify two data destruction techniques, namely, zero overwriting and block cleaning, and their cost-benefit models on flash memory storage. Then, we propose a hybrid scheme that applies one of them based on their costs that vary with data arrangement on flash memory. Our implementation and...
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