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Hide Your Secrets FOREVER! - Erasing Data Securely

Techquickie@techquickie336.2K viewsMay 3, 20194:33
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The first 200 people who head to brilliant.org will get 20% off their annual premium subscription of Brilliant. How can you erase data to the point where it's unrecoverable? Techquickie Merch Store: lttstore.com Follow: twitter.com Leave a reply with your requests for future episodes, or tweet them here: twitter.com

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Hide Your Secrets FOREVER! - Erasing Data Securely explains how to erase data so it cannot be recovered, comparing traditional hard drives (HDDs) with solid state drives (SSDs). The video starts by noting common desire to delete sensitive or embarrassing data and then explains why simple delete or emptying the recycle bin does not truly erase data. It walks through how data is overwritten on HDDs, including the concept of passes and why patterns of zeros, ones, or random data are used, while debunking the necessity of many passes for modern drives. The discussion then shifts to SSDs, highlighting that modern drives handle deletion through TRIM, which helps ensure data is not easily recoverable, and that manual TRIM can be executed if needed. The host emphasizes practical, time-efficient strategies, recommending a single effective wipe for HDDs and relying on TRIM for SSDs, while noting that knowing exact data locations on the drive is important for targeted erasure. The video concludes with practical advice on wiping entire drives and reinstalling the OS before disposal, and it briefly plugs Brilliant.org for daily problems and further learning. Overall, the episode blends core data erasure concepts with actionable guidance, demystifying the topic for everyday users and cautioning against extreme, impractical methods. The takeaway is that for most users, a single overwrite or relying on SSDs built-in protections is sufficient to thwart casual snoops, alongside best practices for securely disposing of a device.

Topics · technology · data_security · hardware · computing

Questions answered

What is the recommended erase method for traditional hard drives (HDDs) according to the video?
For traditional HDDs, a single, complete overwrite with a wiping program is generally sufficient to thwart casual recovery.
Why is a 35-pass overwrite considered unnecessary for modern drives?
Modern drives and research indicate that extensive 35-pass overwrites are overkill, and a single well-executed wipe or relying on the drive's own mechanisms is typically enough.
How should SSD data deletion be handled according to the video?
SSD deletion is usually managed by the TRIM feature, which helps prevent data from being recovered; you can also run TRIM manually if needed.