Criminal Investigations

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Criminal Investigations

• Computer Crime
• Chapter 17

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Computer Crimes

• Computer crime-as that which involves the
  addition, deletion, change or theft of
  information
• Are relatively easy to commit and difficult to
  detect
• Most computer crimes are committed by insiders
• Most computer crimes are not prosecuted

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Classification

• Stealing tangible or intangible assets
• Destroying or altering data
• Embezzling finds
• Destroying or altering software
• Stealing computer software
• Producing/distributing child pornography

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Nature of the Crimes

• Computer crimes may involve the input data, the
  output data, the program, the hardware or
  computer time
• The most common types of computer crime are
  misuse of computer services, program abuse and
  data abuse

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Types of Electronic Crimes Committed 2005

• Virus 82
• Spyware 61
• Phishing 57
• Illegal Generation of Spam Email 48
• Unauthorized access to systems 43
• Denial of Service attacks 32
• Illegal wireless access 19

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Other types of Computer Crimes

• Exposure of private sensitive info 19
• Fraud 19
• Employee Identity Theft 17
• Password Sniffing 16
• Sabotage 11
• Web Site defacement 9
• Extortion 2

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Search Warrants

• Request the consent initially,
• If that fails, use the search warrant
• In that order

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Evidence

• Computer evidence is often contained on disks, is
  not readily discernible and also is highly
  susceptible to destruction
• Evidence is normally in the form of disks, data
  reports, programming or other printed information
  run from information in the computer

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Searching for and Processing Physical Evidence

• Avoid contact with the recording surfaces of
  computer tapes and disks
• Never write on disk labels with a ball-point pen
  or pencil or use paper clips or rubber bands with
  disks
• To do so may destroy the data they contain
• Store computer disks vertically, at approximately
  70F and away from strong light, dust and magnetic
  fields
• Do not use plastic bags

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The Investigative Team

• Investigating computer crime often requires a
  team approach

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Suspects

• Those involved in computer crimes are most
  commonly technical people such as data entry
  clerk, machine operators, programmers, systems
  analysts, and hackers

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Motivation

• Frequent motives for computer crimes are
• Ignorance of proper professional conduct
• Misguided playfulness
• Personal gain
• Maliciousness or revenge

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Preventing Computer Crime

• Computer crimes can be prevented by educating top
  management and employees and by instituting
  internal security precaution
• Top management must make a commitment to defend
  against computer crime

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The End