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Searching & Seizing Computers and Obtaining Electronic Evidence in Criminal Investigations
Third Edition September 2009
CCIPS Criminal Division
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Preface and Acknowledgments





Chapter 2. Searching and Seizing Computers With a Warrant
A. Introduction
B. Devising a Search Strategy
C. Drafting the Affidavit, Application, and Warrant
1. Include Facts Establishing Probable Cause
2. Describe With Particularity the Things to be Seized
3. Establishing the Necessity for Imaging and Off-Site Examination
4. Do Not Place Limitations on the Forensic Techniques That May Be Used To Search
5. Seeking Authorization for Delayed Notification Search Warrants
6. Multiple Warrants in Network Searches
D. Forensic Analysis
1. The Two-Stage Search
2. Searching Among Commingled Records
3. Analysis Using Forensic Software
4. Changes of Focus and the Need for New Warrants
5. Permissible Time Period for Examining Seized Media
6. Contents of Rule 41(f) Inventory Filed With the Court
E. Challenges to the Search Process
1. Challenges Based on "Flagrant Disregard"
2. Motions for Return of Property
F. Legal Limitations on the Use of Search Warrants to Search Computers
1. Journalists and Authors: the Privacy Protection Act
2. Privileged Documents
3. Other Disinterested Third Parties
4. Communications Service Providers: the SCA
Chapter 3. The Stored Communications Act
A. Introduction
B. Providers of Electronic Communication Service vs. Remote Computing Service
1. Electronic Communication Service
2. Remote Computing Service
C. Classifying Types of Information Held by Service Providers
1. Basic Subscriber and Session Information Listedin 18 U.S.C. § 2703(c)(2)
2. Records or Other Information Pertainingto a Customer or Subscriber
3. Contents and "Electronic Storage"
4. Illustration of the SCA's Classifications in the Email Context
D. Compelled Disclosure Under the SCA
1. Subpoena
2. Subpoena with Prior Notice to the Subscriber or Customer
3. Section 2703(d) Order
4. § 2703(d) Order with Prior Notice to the Subscriber or Customer
5. Search Warrant
E. Voluntary Disclosure
F. Quick Reference Guide
G. Working with Network Providers: Preservation of Evidence, Preventing Disclosure to Subjects, Cable Act Issues,and Reimbursement
1. Preservation of Evidence under 18 U.S.C. § 2703(f)
2. Orders Not to Disclose the Existence of a Warrant, Subpoena, or Court Order
3. The Cable Act, 47 U.S.C. § 551
4. Reimbursement
H. Constitutional Considerations
I. Remedies
1. Suppression
2. Civil Actions and Disclosures
Chapter 4. Electronic Surveillance in Communications Networks
A. Introduction
B. Content vs. Addressing Information
C. The Pen/Trap Statute, 18 U.S.C. §§ 3121-3127
1. Definition of Pen Register and Trap and Trace Device
2. Pen/Trap Orders: Application, Issuance, Service, and Reporting
3. Emergency Pen/Traps
4. The Pen/Trap Statute and Cell-Site Information
D. The Wiretap Statute ("Title III"), 18 U.S.C. §§ 2510-2522
1. Introduction: The General Prohibition
2. Key Phrases
3. Exceptions to Title III's Prohibition
E. Remedies For Violations of Title III and the Pen/Trap Statute
1. Suppression Remedies
2. Defenses to Civil and Criminal Actions
Chapter 5. Evidence
A. Introduction
B. Hearsay
1. Hearsay vs. Non-Hearsay Computer Records
2. Confrontation Clause
C. Authentication
1. Authentication of Computer-Stored Records
2. Authentication of Records Created by a Computer Process
3. Common Challenges to Authenticity
D. Other Issues
1. The Best Evidence Rule
2. Computer Printouts as "Summaries"




Table of Cases [PDF]
Index [
PDF]