How secure is merely TRIMing all of a SSD's blocks?

Re:How secure is merely TRIMing all of a SSD's blocks? by bshipp on Wednesday March 08, 2023 @10:01AM (#35069777)

Shredding/sledgehammer is likely the best option for secure disposal of mechanical drives, but SSDs are a different animal and are likely reusable given some of the suggestions in this thread.

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Re:How secure is merely TRIMing all of a SSD's blocks? by fdeee on Wednesday March 08, 2023 @10:19AM (#35070040)

Not really. HDD recoverability is a myth, anything overwritten isn't coming back with modern HDDs. Bits can't "bleed out" anymore, density is far too high for that.

The thing you need to guard against is relocated/reserve sectors, in HDDs same as in SSDs. The proper way to do this is full disk encryption, and if that's not possible, physical destruction.

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Re:How secure is merely TRIMing all of a SSD's blocks? by hedora on Wednesday March 08, 2023 @10:14AM (#35069963)

Most hard disks support hardware level encryption and full disk erase at this point.

There’s very little need to sledgehammer anything given realistic attacker models.

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Re:How secure is merely TRIMing all of a SSD's blocks? by fdeee on Wednesday March 08, 2023 @10:21AM (#35070063)

Both, HDD/SSD encryption in hardware and secure erase have been proven untrustworthy numerous times.

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