Tag Archive : Securely

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If you purchased your computer in the past few years, it probably has a solid-state drive. SSDs are faster than older, mechanical hard drives and use flash memory instead of magnetic platters. But the downside of the technology is that securely deleting files from an SSD is very hard. SSDs use a technique called wear leveling to prolong life, but a side effect of this process is that data can remain on a drive even after you’ve erased it. Instead of using special software to erase an SSD’s contents, you’re better off encrypting the drive, which employs a mathematical process to muddle up the data using a passkey that only you have. Without the key, files on the drive look like gibberish—even if someone succeeds in recovering files, that person still won’t be able to open them.

The good news: Encrypting your storage drive is simple. This is something we

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In the Linux operating system(which is free), the super user(root) has raw access to disks and partitions on the disks in the machine. The general idea is to write random data generated by the Linux operating system, to the hard disk.

The situation often arises where an individual needs to throw away an old computer, but does not want the data on the disk of the old computer to be accessible if someone retrieves it via dumpster diving. There might still be data stored in the motherboard or some of the peripherals, but that is beyond the scope of this article. Ideally, the disk platters should be physically destroyed, but due to hardware or cost constraints, this might not always be possible.

A free way to wipe the data on the disk involves using a bootable Linux disk to write random data to the disk multiple times. Here is the … Read More