Although there are never any guarantees, Maybe..
Hope this helps.
There are many programs and services that will recover files that have been simply deleted, or from hard drives that have been formatted. I'm NOT interested in those.
In discussions of disk wiping software like DBAN, it is commonly said that overwriting more times is better, and that using random data is better than using all 00 or all FF bytes. People say that "with some expense" it is possible to recover data that has been wiped once. Some people misrepresent Peter Gutman's ideas and recommend 35 passes. However, these take a long time, and in a business setting this time has value.
Can anyone recommend a commercial service that can recover files from a hard drive (let's say a 20 GB desktop internal hard drive) that has been overwritten completely even once? If it's feasible with some expense, these services should exist, right? How about data that has been written over 3 times?
I've seen people point to the Guzik V2002 as a device that could recover some data after it is overwritten. However, I don't see any services claiming to use this.