You guys need to watch the CEO of TECHFUSION DATA RECOERY on this news page. He declares that overwritten data can be recovered and he declares they did it in a case. The guy does not seem to know the proper information, but you decide! Comments on his process accepted!
Techfusion, Alfred Demirjian speaks on City of Boston Data Deletion
http://www.techfusion.com/news.html
Thank you,
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Scott A. Moulton / CCFS CCFT CDRP DREC
Certified Computer Forensic Specialist
Certified Computer Forensic Technician
Certified Data Recovery Professional
Data Recovery Expert Certification
SANS Instructor for SEC606
Forensic Data Recovery
http://www.sans.org/training/description.php?mid=1237
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Forensic Strategy Services, LLC &
My Hard Drive Died, DBA
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601b Industrial Court, Woodstock, Ga 30189
Phone: 770-926-5588 Fax: 770-926-7089
DATA RECOVERY UPDATES VIA TWITTER: @scottamoulton
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News article 1: "Demerjian said engineers would make a copy of his
hard drive and then run its data recovery software on that drive,
looking for deleted files."
So.. if you make a copy.. there is no way you are going to do any
super ultra-dope double-secret proprietary platter bit carving...
Also, it doesn't seem like that much of a technical miracle from a
forensics standpoint. User gets emails, deletes them, then empties
his deleted items folder before the server can do a backup at
midnight.. ok, the emails are either in unallocated space, or if those
areas get overwritten you might find fragments in file slack. I
really don't think the user ended up trying to "scrub" or overwrite
anything on purpose, but I guess those details will eventually get
revealed.
Also, the "famous" case that techfusion dealt with was one in which
the smoking gun (awful pun I know) was pictures. Every forensics
person on this list knows that pictures, depending on how they were
viewed and stored can easily leave traces everywhere. View them in a
browser, they could leave temp artifacts.. there are thumbnail.db
files, depending on what software he used to edit them it could leave
traces as well, last time I researched Picassa it made a new image
anytime you did any digital effects processing on it and left the
original intact, and so on. From the interview you can tell they most
likely did file carving, since he states that the pictures had "dots",
which I can only assume means artifacts from carving that didn't
result in pictures that were 100% intact.
Lastly, did he honestly say that his secret data recovery methods were
so secret that they don't write them down, and try not to have any
turnover and that they keep this stuff in their employees heads?!?
Even the Colone's 11 herbs and spices and the recipe for Coke is
written down.. Hard to write a recipe for snake oil.. \
Lastly I do have to share a bit of humor.. I found his on his testimonials page:
“Thanks for your speedy and helpful data recovery services! You helped
me save years' worth of data. I'll definitely call you again if I have
another hard drive emergency."
-Cassandra
Dr. Cassandra Extavour
Harvard University
I love that they never say things like, "I'll always backup my data
from now on!!" Ahh customers.. God bless them!
Karlo Arozqueta, EnCE, CISSP