| 9 Nw. J. Tech. & Intell. Prop. 1, http://www.law.northwestern.edu/journals/njtip/v9/n1/1 |
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¶ 1 Today's judges face numerous challenges in determining the truth of the matter at hand, but none is more challenging than ruling on issues that pivot on digital evidence.1 Gone are the days when the most technically challenging decision was determining if evidence on a floppy disk2 had been destroyed because a litigant exposed it to a strong magnetic field.3 Today's legal challenges are extremely technical when it comes to determining the integrity of digital evidence and assigning responsibility for direct or indirect acts of spoliation.4 While judges are entirely capable of arriving at the correct decision when it comes to ruling on the value of digital evidence,5 they are at the mercy of the "experts" involved when it comes to issues of spoliation.6
¶ 2 In an expanding trend, judges are basing important decisions on inaccurate or incomplete technical details concerning digital evidence.7 As a result, for cases where digital evidence plays a pivotal role, either dangerously erroneous precedent will be established based upon legally sound but technically flawed logic, or successful appeals will increase dramatically as the technical weaknesses of the decision are subsequently exposed. This thesis—that technological ignorance leads to legal error—is the primary focus behind this article.
¶ 3 We have identified a group of recent cases where digital evidence played a significant role in the judicial decisions. From this group a single case was selected to serve as a "test case" for our thesis. The remainder of this article will discuss the decisions reached in this "test case," and demonstrate how a limited understanding of low-level computer functions,8 especially at the level where files are created and deleted, contributed to legal decisions by the court that were fundamentally incorrect.
¶ 4 At this point a disclaimer is in order. To present our argument, we need to discuss technical issues related to computer storage techniques9 and file structures.10 Clearly the restricted length of this article prevents a detailed discussion. Where possible, analogies will be used to compensate. In other cases we ask that you to take our word that the opinions presented are expert ones formed after decades of experience with cases involving digital evidence. Our goal is not to overwhelm you with technical-level geek talk, rather to help you to come away from the article with a deeper, but common sense appreciation for the impact a limited understanding of computer technology can have on even the most basic of judicial decisions.
¶ 5 The case we selected to highlight is TR Investors, LLC v. Genger.11 In Genger a determination of spoliation was made by the Delaware Court of Chancery, and Vice Chancellor Strine sanctioned defendant Arie Genger for his actions.12 The sanctions were issued due to the defendant's involvement in overwriting the content of deleted files in the "unallocated space" of computers under his control.13 The first part of the article will focus on the decision itself. We will then discuss why, in our considered opinion, the court's decision was incorrect.
¶ 6 The storage systems of most computers have two primary areas where files14 reside. Those two areas are "existing file space" where valid files can be found, and deleted-free space,15 or more globally "unallocated space,"16 which for purposes of analogy can be considered as a garbage dump where unwanted and discarded information goes to await recycling. This "garbage dump" space exists on every hard drive17 and server,18 and is what forensic experts typically examine when recovering deleted files that have been emptied from the recycle bin.19
¶ 7 In the Genger case, the court determined that a consultant employed by the defendant had used a wiping utility20 to overwrite the unallocated space of a desktop computer with the intention of preventing the plaintiff from recovering deleted files relevant to the case. The court reached this conclusion after it was informed by the plaintiff's computer experts that electronic versions of documents known to be in the defendant's possession could not be located as either valid21 or deleted files on the defendant's computer systems.22 The inability to forensically locate these documents in digital form resulted in sanctions against the defendant Genger.23
¶ 8 Our review of the actions taken by all involved, per the court record, establishes that the court, through no fault of its own, reached the wrong conclusions on several levels. Had the court been properly informed of the following technical facts, it is highly likely that it would have reached a more informed decision in favor of the defendant. Genger involved the battle for control of an investment company known as TRI.24 The dispute was between the Trump Group, the new owners, and Arie Genger, the original owner.25 As is standard in such cases, the court entered a "status quo order," enjoining both parties from "tampering with, destroying, or in any way disposing of any [c]ompany-related documents, books, or records."26
¶ 9 The problem was that the court acknowledged Mr. Genger as an "international man of mystery,"27 who had used TRI's computer system not just to conduct TRI business,28 but to create and receive documents implicating Israel's national security and as a storage device for his own personal financial and legal documents.29 To protect the sensitive documents, TRI retained a law firm that in turn engaged a forensic consulting firm to untangle this Gordian knot.30
¶ 10 Over the course of a weekend, the court permitted the defendant's attorneys and consultants to open documents and e-mails on the TRI computers and encrypt those files containing personal and Israeli government information.31 The consulting firm created file level snapshots of the "existing files" on the potentially responsive hard drives.32 However, as is common in e-discovery cases, the consultants never created a forensic image33 of the entire hard drive, which would have included all of the unallocated space allowing it to be preserved for additional forensic analysis. After the consultants took a "snapshot" of the existing valid files, the computers and hard drives were reviewed by the law firm in accordance to the process agreed to by the parties.34 Where Genger's personal items were discovered on these systems, the court permitted these items to be individually encrypted.35 Once an encrypted version of the file was created the original was deleted using the standard delete function of the Windows operating system. The court acknowledged that during this encryption process, non-encrypted, temporary copies of Genger's documents were created in the unallocated space of the hard drive.36 Those temporary copies, if recovered later from the unallocated space, would have defeated the point of the encryption process.
¶ 11 Apparently motivated by this concern, Genger and his technical advisor later ran a wiping software program on the unallocated space after the file level review had been completed, destroying (by overwriting) all previous data contained in the unallocated space, before turning over the computers and hard drives to the Trump Group.37
¶ 12 Although Genger did create a file level copy of the computer systems in order to have a snapshot of every valid file on the system, the court found Genger's actions of wiping the unallocated space to be a deliberate attempt at spoliation.38 As a result, the court imposed a series of heavy sanctions upon Genger, fining him and shifting the burden of proof to him.39 The court's logic in imposing sanctions was based on a fundamental misunderstanding of the nature of unallocated computer space and the data that resides within that space. Moreover, in imposing sanctions upon Genger, Vice Chancellor Strine has expanded preservation orders in the Delaware courts to include unallocated space in all computers and servers involved in litigation—an unintended result that is unworkable, unreasonable, and prohibitively expensive.40
¶ 13 The court's logic in imposing sanctions was faulty on a number of technical levels. While the defendant wiped the unallocated space of these hard drives, it was only after first taking and saving externally a file-level snapshot of the "existing files" on the hard drives in question.41 After any sensitive documents that contained national security or personal information were encrypted the protocol required that the original hard drives be turned over to the plaintiff. It was this "turn-over" protocol requirement that triggered the wiping of unallocated space. The wiping was necessary to delete unencrypted copies of the sensitive documents automatically generated as part of the encryption process.42 It should be noted that after the encryption process was completed, thousands of sensitive files (that were not encrypted) which had been deleted now resided in the unallocated space. The later use of forensic analysis tools by the plaintiff would have allowed for the recovery of a significant percentage of these sensitive files in their original state. The court was wrong to find spoliation and impose sanctions for a number of reasons. Our first example is significant: the court did not properly determine if the wiping software had destroyed relevant documents.43 In its opinion, the court references a memorandum, the "Lentz Memo," as one of the missing documents that could have been recovered from unallocated space as a deleted file—assuming the unallocated space had not been wiped by the defendant.44 The court's determination, however, was based solely on cause and effect (it should be here, it's not, hence it must have been wiped), not independently verifiable forensic evidence.45 In addition, other technological reasons related to the normal day-to-day operation of any Windows-based computer system would also explain why the missing files could not be found in the unallocated space.
¶ 14 What the court perhaps did not fully understand is that every action, including just turning on the computer in the morning, creates, deletes, and modifies hundreds of files and overwrites data in the unallocated space.46 Given the nature of the encryption process expressly permitted by the court, it is more than likely that all, or almost all, of the data assumed to be available for recovery by the court in the unallocated space had already been overwritten.47 This is because, as the court recognized, the encryption process creates at least one or more temporary files, a final "encrypted" file, and the need to delete the original file. All of this activity consumes resources in the unallocated space area of the hard drive.48 Given the large number of documents reviewed over the course of days by a team of attorneys, any data in the unallocated space could have easily been overwritten by the encryption process itself, or the normal day-to-day operation of the computer.49 Thus, the Vice Chancellor's order, by permitting the encryption of files stored on the systems in question, most likely resulted in overwriting substantial blocks of data that previously had existed in the unallocated space. If, as the court found, there was a smaller dedicated unallocated space for electronic mail and email attachments, then all email derived data in this smaller, segregated segment was almost certainly overwritten before the wiping software was utilized.50 If the Lentz Memo, as an example, had been deleted from the unallocated space, it could have been innocently overwritten by the thousands of files created during the encryption process specifically allowed by the court.51 So even if the defendant did not run the wiping software, the Lentz Memo may well have never been found due to the impact the normal day-to-day operations of the computer has on the unallocated space. Its absence does not demonstrate that the defendant intentionally wiped it.52
¶ 15 It is also unclear if the file-level copying process created a copy of the $MFT file for each computer backed up. This is important because the $MFT file, a Windows system file that is really a small database, contains technical details about all valid files and most deleted files.53 Think of the $MFT file as the table of contents for a hard drive that points you to the page of interest.54 That this file was not examined to determine what details existed about previously deleted files was a significant technical oversight that ignored valuable potential evidence. This is critical because a review of the $MFT could have likely resolved the courts concern regarding intentional spoliation by specifically identifying the names and sizes of the files that had been recently deleted.55
¶ 16 The court also did not appear to understand that a vast majority of data in unallocated space are random fragments.56 The analogy here is expecting entire pristine documents in an area that consists mostly of confetti. This is probably why TRI's computer consultants never preserved the unallocated space before the encryption process was initiated. The initial judicial preservation order issued by the court prohibited the destruction of any company related documents, books, or records.57 It is not clear how Vice Chancellor Strine bridged the technology world from that routine mandate to the finding that deleted files, that per normal descriptive terms are already destroyed and are unrecoverable within the Windows Operating System, fall within those parameters. A routine e-Discovery process paying no attention to deleted files was transformed, to the defendant's disadvantage, into an e-Forensic investigation about deleted files.
¶ 17 It is unreasonable for courts to expect litigants to preserve the unallocated space of their computers, or understand they are required to preserve unallocated space, as the result of a routine preservation order.58 To expand preservation orders to include unallocated space in computers and servers on pain of sanction, as Vice Chancellor Strine now has done in the Delaware courts, is unworkable and unreasonable.59 To preserve this storage space, a company would effectively have to shut down all their computers and servers prior to imaging—grinding the business to a halt.60 Even then, it is not always possible to recover deleted files from unallocated space, as opposed to random bits and pieces of the whole.
¶ 18 Moreover, because of the random nature of the unallocated space, it is impossible to know with certainty where the previously deleted information sought is located.61 It is a simple matter to segregate active files by custodian. If employee John Smith has information regarding the litigation, you segregate his active files and search them for useful information. With fragments of files, as typically found in unallocated space, no such segregation is possible. The analogy here is searching for a needle in a field of haystacks. The cost will always outweigh the benefits, if any, of such a search.62 For a company that has a number of servers, even the cost of imaging and maintaining the unallocated space, as will be required if unallocated space is now part of every "status quo" preservation order and litigation hold, may be prohibitively expensive.63
¶ 19 Finally, the court was correct to note that the timing of the wiping activity by TRI's consultant, at night after everyone was done for the day, might provide reason for suspicion. However, undertaking such a lengthy process at night is a common practice that minimizes the impact of the e-Discovery process on the business.64 Accordingly, such actions on their own should not have led the court to conclude a nefarious intent.65 Indeed, if the defendant's consultant was really trying to hide his actions from discovery, he could easily have removed all forensic trace evidence of his wiping activities.66 The failure to do so supports the innocent explanation for the wipe offered by the defendant.67
¶ 20 Armed with partial or incomplete information regarding digital matters as noted above, courts unfortunately can reach the wrong conclusion. As illustrated in TR Investors, LLC v. Genger, where the plaintiff successfully, but mistakenly, asserted the defendant committed spoliation of evidence and unwittingly led Vice Chancellor Strine to impose an unreasonable and expensive burden upon this defendant and all future litigants and companies in the State of Delaware—the burden of preserving unallocated space on pain of spoliation sanctions.68
Special thank you to Mr. Elan Raffel. Mr. Raffel is entering his second year at Cardozo Law School of Yeshiva University in New York and is interested in practicing corporate law when he graduates.
| © Copyright 2010 by Northwestern University School of Law, Northwestern Journal of Technology and Intellectual Property | Volume 9 Issue 1 (October 2010) |