[nitrogen]

For millions of pounds, it might be worth using an electron microscope to try to pull the bits off if the platters can be recovered.

[DanBC]

electron microscope have really low odds of recovering anything useful.

At beast it's a speculative attack to be considered in a risk assessment, not a real attack anyone ever actually uses.

I'd welcome any information about people really using electron microscopes to get better than 63% per bit recovery.