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

Re:How secure is merely TRIMing all of a SSD's blocks? by avianlyric on Wednesday March 08, 2023 @05:22PM (#35075577)

Didn’t know that. Don’t suppose you’ve got any links that describe the physical process that results in the correlation between write quality and erase-to-program delay?

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Re:How secure is merely TRIMing all of a SSD's blocks? by swagmoney1606 on Wednesday March 08, 2023 @07:10PM (#35076574)

How hard would it be to write custom firmware for an M.2 SSD?

I'm not even sure where to start

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Re:How secure is merely TRIMing all of a SSD's blocks? by avianlyric on Thursday March 09, 2023 @11:10AM (#35082796)

A good one? Extremely hard. Pretty sure 90% of and SSD firmware is just secret sauce magic to deal with the mess and noise the physical world creates when you try to cram so much entropy into such a tiny physical space.

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Re:How secure is merely TRIMing all of a SSD's blocks? by timbre1234 on Saturday March 11, 2023 @03:24AM (#35106535)

Do you want research or do you want an analogy? I can give you both. On the research front:

    "An Experimental Analysis of Erase-to-Program Interference in Multi-Level Cell NAND Flash Memories" by F. X. Zhang, et al., in IEEE Transactions on Electron Devices, vol. 63, no. 4, pp. 1621-1628, April 2016.

    "Erase-to-Program Disturbance in NAND Flash Memory: Characterization, Modeling, and Mitigation Techniques" by M. H. Kim, et al., in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 25, no. 9, pp. 2381-2392, Sept. 2017.

    "A Study of Erase to Program Disturbance in 3D NAND Flash Memory" by T. Wang, et al., in IEEE Transactions on Electron Devices, vol. 64, no. 7, pp. 3153-3159, July 2017.

    "Characterization and Modeling of the Erase-to-Program Disturbance in Multi-Level Cell NAND Flash Memories" by R. Micheloni, et al., in IEEE Transactions on Electron Devices, vol. 56, no. 11, pp. 2384-2392, Nov. 2009.

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Re:How secure is merely TRIMing all of a SSD's blocks? by avianlyric on Monday March 20, 2023 @07:11PM (#35240173)

Don’t suppose you could still provide the analogy. It’ll probably make it easier for me to understand the research as I only have a basic understanding of the physics at play here.

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