At 04:19 PM 4/6/00 -0400, Gary Jeffers wrote: >Jim Choate writes "...Fourier Analysis..." for ressurecting wiped >data. > > This is interesting but a question arises: How do you interrogate the >data? That is: what INT's (pc interrupts) do you use to look at >the data? Actually, maybe I should say the sectors rather than the data. Are >these undocumented DOS? You need access some analog measurements. I think grc.com has info on that. > Also, I hear stories of companies that unwipe data. Who are these >companies? What is the name of the software that they use? Is it >available to cops only? Where can we get it? Access Data does this work on lamely encrypted data. There are many firms that will do clean-room operations to recover data on crashed drives. The spooks can do STM using magnetic probes. Good wipers overwrite data a dozen times with random data. You worry about the little strips left behind when the head doesn't repeat its position exactly. Sandblasting is considered effective.
