In what circumstances would you conduct searches without a warrant?

The correct answer is based on the "exigent circumstances" exception to the Fourth Amendment's warrant requirement. This legal doctrine allows law enforcement to conduct a warrantless search or seizure if they have probable cause and a reasonable belief that evidence is in imminent danger of being destroyed or removed. In digital forensics, this is particularly relevant for volatile data (e.g., in RAM) or when a suspect is actively attempting to delete files. The immediate need to preserve evidence in such situations justifies bypassing the warrant process.

B: A mere "suspicion" is below the required legal standard of "probable cause," and even with probable cause, a warrant is generally necessary. C: The specific type of crime, such as a Denial-of-Service attack, does not automatically create a blanket exception to the warrant requirement. D: No law, including California SB 567 (which pertains to sentencing reform), grants blanket authority for warrantless seizures under all circumstances, as this would be unconstitutional.

1. U.S. Department of Justice, Computer Crime and Intellectual Property Section. (2009). Searching and Seizing Computers and Obtaining Electronic Evidence in Criminal Investigations (3rd ed.). Section III.A.1, "Exigent Circumstances," pp. 53-55. This document states, "The exigent circumstances exception permits law enforcement to conduct a search or seizure without a warrant if probable cause exists and the exigencies of the situation make the needs of law enforcement so compelling that a warrantless search is objectively reasonable under the Fourth Amendment... For example, officers may make a warrantless seizure of a computer if they have probable cause to believe it contains contraband and they reasonably believe the computer is about to be destroyed..."

2. Kerr, O. S. (2013). The Fourth Amendment and New Technologies: Constitutional Myths and the Case for Caution. Michigan Law Review, 102(5), 801-888. Section II.C discusses how traditional exceptions to the warrant requirement, such as exigent circumstances, are applied to new technologies. It reinforces that the imminent destruction of evidence is a key justification. (Available via university law libraries and databases).

3. Casey, E. (2011). Digital Evidence and Computer Crime: Forensic Science, Computers, and the Internet (3rd ed.). Academic Press. Chapter 3, "Legal Aspects of Digital Forensics," discusses the legal framework for searches, including the exigent circumstances exception for evidence that can be easily and quickly destroyed. (This text is widely used in university digital forensics curricula).