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Computer Forensics. Overview. Computer Crime Laws Policy and Procedure Search Warrants Case Law Intellectual Property Protection Privacy Ethics. Computer Crime. What is Computer Crime?

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Computer Forensics

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Computer Forensics


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Overview

  • Computer Crime Laws

  • Policy and Procedure

  • Search Warrants

  • Case Law

  • Intellectual Property Protection

  • Privacy

  • Ethics


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Computer Crime

  • What is Computer Crime?

    • Criminal activity directly related to the use of computers, specifically illegal trespass into the computer system or database of another, manipulation or theft of stored or on-line data, or sabotage of equipment and data.

    • Criminal activity can also comprise the use of computers to commit other kinds of crime: harrassment, scams, hate crimes, fomenting terrorism, etc


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Computer Crime

  • What is a Computer Crime?

    • Stealing trade secrets from a competitor

    • Extortion

    • Use of a packet sniffer to watch instant messaging conversations


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Federal Computer Crime Laws

  • 4th Amendment

  • Computer Fraud and Abuse Act of 1986

  • Electronic Communications Privacy Act of 1986


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Federal Computer Crime Laws

  • Electronic Espionage Act of 1996

  • Communications Decency Act 1996

  • Child Pornography Prevention Act

  • Digital Millennium Copyright Act of 1998

  • COPPA - Children's Online Privacy Protection Act

  • HIPAA - Health Insurance Portability And Accountability Act

  • Access Device Fraud

  • USA Patriot Act


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State Computer Crime Laws

  • Computer crime laws are state-specific


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Case Law

  • What is case law?

    • “Created” by the rulings of judges on court cases

  • Importance of case law?

    • Very few laws governing current and emerging technologies

    • Precedents set by case law often become legislative law


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Computer Fraud and Abuse Act


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Computer Fraud and Abuse Act

  • 15 USC §1644 - Fraudulent use of credit cards; penalties

  • 18 USC §1029 - Fraud and related activity in connection with access devices

  • 18 USC §1030 - Fraud and related activity in connection with computers

  • 18 USC §1343 - Fraud by wire, radio, or television

  • 18 USC §1361-2 - Prohibits malicious mischief


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15 USC §1644

  • Use, attempt or conspiracy to use card in transaction affecting interstate or foreign commerce

  • Transporting, attempting or conspiring to transport card in interstate commerce

  • Use of interstate commerce to sell or transport card

  • Furnishing of money, etc., through use of card


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Crimes and Penalties

  • Whoever in a transaction affecting interstate or foreign commerce furnishes money, property, services, (>$1,000) shall be fined not more than $10,000 or imprisoned not more than ten years, or both


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18 USC §1029

  • Counterfeit access devices

  • Telecommunications instrument modified to obtain unauthorized use of telecommunications services.

  • Fraudulent transactions using credit cards

  • Use of scanning receiver


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Crimes and Penalties

  • Forfeiture to the United States of any personal property used or intended to be used to commit the offense

  • Fine under this title or imprisonment for not more than 20 years, or both.


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18 USC §1030

  • Accesses a computer without authorization to obtain restricted data.

  • Without authorization accesses Federal computers

  • Conduct fraud and obtains anything of value on such computers

  • Traffics in passwords or similar information


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Crimes and Penalties

  • The United States Secret Service has authority to investigate offenses

  • Forfeiture of any personal property used or intended to be used to commit the offense

  • Fine under this title or imprisonment for not more than 20 years, or both.


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18 USC §1343

  • Fraud by means of wire, radio, or television communication in interstate or foreign commerce,

  • Transmission of digital or analog data in such fraud


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Crimes and Penalties

  • Fine under this title or imprisonment not more than five years, or both.

  • If the violation affects a financial institution, fine of $1,000,000 or imprisonment of 30 years, or both


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18 USC §1361-2

  • Prohibiting malicious mischief

  • Computer hacking/website defacement


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Actual Crimes

  • Many cases have been prosecuted under the computer crime statute, 18 U.S.C. § 1030 (unauthorized access). A few recent sample press releases from actual cases are available via links below:

  • Kevin Mitnick Sentenced to Nearly Four Years in Prison; Computer Hacker Ordered to Pay Restitution to Victim Companies Whose Systems Were Compromised (August 9, 1999)

    Source: http://www.usdoj.gov/criminal/cybercrime/compcrime.html


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Actual Crimes

  • Former Chief Computer Network Program Designer Arraigned for Alleged $10 Million Computer "Bomb"

  • Juvenile Computer Hacker Cuts off FAA Tower At Regional Airport -- First Federal Charges Brought Against a Juvenile for Computer Crime

    Source: http://www.usdoj.gov/criminal/cybercrime/compcrime.html


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Sample Cases

  • http://www.daviddfriedman.com/Academic/Course_Pages/21st_century_issues/21st_century_law/computer_crime_legal_01.htm

  • http://www.law.emory.edu/11circuit/june2000/99-12723.opn.html

  • http://www.usdoj.gov/criminal/cybercrime/cccases.html

  • http://www.usdoj.gov/criminal/cybercrime/garciaArrest.htm

  • http://www.usdoj.gov/criminal/cybercrime/jiangIndict.htm

  • http://www.usdoj.gov/criminal/cybercrime/schellersent.htm

  • http://www.usdoj.gov/criminal/cybercrime/usamay2001_2.htm


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Electronic Communications Privacy Act


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Where Can I Find ECPA?

United States Code Title 18 Crimes and Criminal Procedure

Chapter 119 – Wire and Electronic Communications Interception and Interception of Oral Communications

Sections 2510 - 2522


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Overview of ECPA

  • President Reagan signed ECPA into law in October 1986

  • Designed to extend Title III Privacy Provisions to new technologies such as electronic mail, cellular phones, private communication carriers, and computer transmissions


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“The Wiretap Act”

  • This law required that enforcement agencies obtain a warrant before executing a wiretap (usually used to record voice conversations)


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What Rights Does ECPA Provide?

  • ECPA protects the transmission and storage of digital communication such as email

  • Authorities are forbidden to intercept non-voice portions of communication, thanks to ECPA

  • This is defined as "any transfer of signs, signals, writing, images, sound, data, or intelligence of any nature transmitted in whole or in part by a wire, radio, electromagnetic, photoelectric or photo-optical system."


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ECPA Rights (cont.)

  • Act was designed to protect against electronic communication service providers from disclosing any contents of communication to authorities without lawful consent of the party that originated the communication

  • Act provided for coverage of all communication providers, not just “common carriers” available to the public


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Cellular Phone Communication

  • Act also protects cellular phone conversations; wired privacy extended to wireless

  • Penalty for intercepting a non-encrypted call is only a $500 fine, rather than the normal maximum of 5 years in prison

  • Note: This act also explicitly states it does not protect the “radio portion of a telephone that is transmitted between the cordless telephone handset and the base unit."


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Radio Paging

  • ECPA also protects pagers

  • Voice and digital display pagers were determined to be an extension of an original wired communication

  • However, tone-only pagers are not protected by ECPA


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Customer Records

  • ECPA provides for the protection of subscriber and customer records belonging to electronic service providers

  • Authorities cannot access these records without a search warrant and court order, unless otherwise notifying the customer


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References

  • http://www.digitalcentury.com/encyclo/update/ecpa.html

  • http://floridalawfirm.com/privacy.html


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USA Patriot Act


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  • Some Perspective

  • On September 11, 2001, more Americans were murdered than…

  • American battle deaths in the war of 1812

  • American battle deaths at Pearl Harbor

  • American battle deaths in the Indian Wars

  • American battle deaths in the Mexican War

  • American battle deaths in Vietnam prior to 1966

  • Union battle deaths at Bull Run

  • Police officers killed in the line of duty since 1984

  • Source: Federal Law Enforcement Training Center Glynco, Georgia


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USA Patriot Act – Oct 2001

  • Provides Tools To Intercept and Obstruct Terrorism

  • Some believe it was too hasty

    • There were few conferences

    • The House vote was 357-66

    • The Senate vote was 98-1


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USA Patriot Act

  • Specifically, the Act:

    • Creates several new crimes: bulk cash smuggling, attacking transportation systems, etc.

    • Expands prohibitions involving biological weapons

    • Lifts the statute of limitations on prosecuting some terrorism crimes

    • Increases penalties for some crimes

    • Requires background checks for licenses to transport hazardous materials

    • Expands money laundering laws and places more procedural requirements on banks

    • Promotes information sharing and coordination of intelligence efforts


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USA Patriot Act

  • Provides federal grants for terrorism prevention

  • Broadens the grounds for denying aliens admission

  • Alters some domestic security provisions for DoD

  • Most provisions of the Act shall cease to have effect on December 31, 2005

  • However, a USA Patriot Act II is being discussed in Congress


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    Computer Crime

    • Penalty of 5 years for a first offense and 10 years for a subsequent offense for damaging a federal computer system

    • Damage includes any computer impairment that causes the loss of at least $5,000 or threatens the public health or safety.


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    Computer Crime

    • To be found guilty, the person must:

      • Knowingly cause the transmission of a program, information, code, or command that results in damage to a protected computer without authorization

      • Intentionally access a federal computer without authorization and cause damage (§ 814)


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    Computer Crime

    • The act requires the attorney general to create regional computer forensic laboratories:

      • Examine seized or intercepted computer evidence

      • Train and educate federal, state, and local law enforcement and prosecutors

      • Assist federal, state, and local law enforcement in enforcing computer-related criminal laws

      • Promote sharing of federal expertise

    • The act also provides funding for these facilities (§ 816)


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    Other Crimes / Penalties

    • Attacks Against Mass Transportation Systems

      • The crime is punishable by a fine, up to 20 years if the violator traveled or communicated across state lines or

    • The crime is punishable by life in prison if the offense resulted in death

    • Counterfeiting

      • The act makes counterfeiting punishable by up to 20 years in prison


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    Other Crimes / Penalties

    • Harboring or Concealing Terrorists

      • This crime is punishable by a fine and 10 years in prison (§ 803)

    • Biological Weapons

      • This is punishable by a fine, and 10 years in prison

    • Money Laundering

      • This crime is punishable by 5 years in prison

      • For Federal employees, the crime is punishable by a fine 3 times the value received, and 15 years in prison, (§ 329)


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    Increased Penalties

    • Arson from 20 years to life

    • Energy facility damage, from 10 to 20 years

    • Supporting terrorists, from 10 to 15 years

    • Supporting designated foreign terrorist organizations, from 10 to 20 years

    • Destroying national defense materials, from 10 to 20 years

    • Sabotaging nuclear facilities from 10 to 20 years

    • Carrying a weapon or explosive on an aircraft from 15 to 20 years

    • Damaging interstate gas or hazardous pipeline facility, from 15 to 20 years


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    Information Sharing

    • The act:

      • Foreign and national intelleigence surveillance can exchange information (§ 504)

      • Regional information sharing between federal, state, and local law enforcement (§ 701)

      • Attorney general can apply to a court for disclosure of educational records to prosecute a terrorist act

      • Act also provides immunity for people who in good faith disclose these documents) (§ 507, 508)


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    Privacy Implications

    • American Civil Liberties Union: “The USA Patriot Act allows the government to use its intelligence gathering power to circumvent the standard that must be met for criminal wiretaps. …

    • The new law allows use of Foreign Intelligence Surveillance Act surveillance authority even if the primary purpose were a criminal investigation.

    • Intelligence surveillance merely needs to be only for a "significant" purpose.

    • Law enforcement may search primarily for evidence of crime, without establishing probable cause

    • This provision authorizes unconstitutional physical searches and wiretaps


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    Privacy Implications

    • “In allowing for "nationwide service" of pen register and trap and trace orders, the law further marginalizes the role of the judiciary.

    • It authorizes what would be the equivalent of a blank warrant in the physical world: the court issues the order, and the law enforcement agent fills in the places to be searched.

    • This is not consistent with the important Fourth Amendment privacy protection of requiring that warrants specify the place to be searched.”

    • In short, the USA Patriot Act assumes no “expectation of privacy”


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    Case Study: Carnivore

    • TCP/IP packet sniffer developed by the FBI that has the ability to store all traffic on a network

    • Intended Uses: Terrorism, Espionage, Child Pornography/Exploitation, Information Warfare/Hacking, Organized Crime/Drug Trafficking, Fraud

    • Reassembles your e-mail, webpages, files and searches for keywords


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    Case Study: Carnivore

    • Legitimate use vs. invasion of privacy

      • Find out which web sites you visit

        • deathtoamerica.com

        • girlsgonewild.com

      • Read your e-mail

        • bomb making instructions

        • love letters

      • Save a copy of files you download

        • shoebomb.zip

        • transactions.zip


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    Case Study: Carnivore

    • Pre-USA Patriot Act realities:

      • FBI suspects you of criminal activity

      • Requests court order to use Carnivore

      • Installs Carnivore at your ISP

      • Carnivore grabs all of your packets authorized in the court order

      • Carnivore must not grab anyone else’s packets

      • Data physically collected once a day

      • Court order expires in 30 days

    • Post-USA Patriot Act fears:

      • The FBI can use Carnivore to go fishing for personal information


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    Related Cases

    • John Walker Lindh – sentenced to 20 years in federal prison

    • Conspiracy to Murder U.S. Nationals (18 U.S.C. § 2332(b)) (Count One)

    • Conspiracy to Provide Material Support & Resources to Foreign Terrorist Organizations (18 U.S.C. Defendant. ) § 2339B) (Counts Two & Four)

    • Providing Material Support & Resources to Foreign Terrorist Organizations (18 U.S.C. §§ 2339B ) & 2) (Counts Three & Five)

    • Conspiracy to Contribute Services to al Qaeda (31 C.F.R. §§ 595.205 & 595.204 & 50 U.S.C. § 1705(b)) (Count Six)

    • Contributing Services to al Qaeda (31 C.F.R. §§ 595.204 & 595.205, 50 U.S.C. § 1705(b) & 18 U.S.C. § 2) (Count Seven)

    • Conspiracy to Supply Services to the Taliban (31 C.F.R. §§ 545.206(b) & 545.204 & 50 U.S.C. § 1705(b)) (Count Eight)

    • Supplying Services to the Taliban (31 C.F.R. §§ 545.204 & 545.206(a), 50 U.S.C. § 1705(b) & 18 U.S.C. § 2) (Count Nine)

    • Using and Carrying Firearms and Destructive Devices During Crimes ) of Violence (18 U.S.C. §§ 924(c) & 2) (Count Ten)


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    Related Cases

    • Zacarias Moussaoui – awaiting twice-delayed trial

    • Conspiracy to Commit Acts of TerrorismTranscending National Boundaries(18 U.S.C. §§ 2332b(a)(2) & (c)) (Count One)

    • Conspiracy to Commit Aircraft Piracy(49 U.S.C. §§ 46502(a)(1)(A) and (a)(2)(B)) (Count Two)

    • Conspiracy to Destroy Aircraft(18 U.S.C. §§ 32(a)(7) & 34) (Count Three)

    • Conspiracy to Use Weapons of Mass Destruction(18 U.S.C. § 2332a(a)) (Count Four)

    • Conspiracy to Murder United States Employees(18 U.S.C. §§ 1114 & 1117) (Count Five)

    • Conspiracy to Destroy Property(18 U.S.C. §§ 844(f), (i), (n)) (Count Six)


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    Related Cases

    • Interesting topics in Moussaoui case:

      • U.S. District Court Judge Leonie Brinkema released a detailed government report on the computers and e-mail search in the case

      • The evidence includes 140 computer hard drives, four of which used by Moussaoui

      • FBI investigators copied their hard drives using Safeback and Logicube software

      • Computer forensics experts were unable to find any trace of Moussaoui's "xdesertman@hotmail.com" account or some 27 variations of that address

      • A search of computers Moussaoui may have used at a Kinko's in Eagan, Minnesota, also came to a dead end because Kinko's cleans out the hard drives on its public computers once every week


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    References

    • http://www.epic.org/privacy/terrorism/hr3162.html

    • http://archive.aclu.org/congress/l110101a.html

    • http://notablecases.vaed.uscourts.gov/1:01-cr-00455/docs/68092/0.pdf

    • http://www.cise.ufl.edu/~nfarring/carnivore

    • http://www.cga.state.ct.us/2001/rpt/olr/htm

    • http://www.cise.ufl.edu/~nfarring/carnivore


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    Computer Privacy


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    Privacy

    • What is privacy?

    • How is it determined?

      • To determine and define what privacy is, we must look at current law, case precedence, and public opinion


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    Constitutional Search

    • 4th Amendment of the U.S. Constitution

      “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized. ”


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    Privacy

    • What websites are you visiting?

      • Wireless internet

    • Where are you?

      • GPS cell phones, vehicles with OnStar

    • What and where are you purchasing?

      • Credit cards

    • Bluetooth- and RFID-enabled devices and clothing


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    Security and Privacy

    • Security is a wider Concept

    • Security of Information embraces:

      • Confidentiality

      • Integrity

      • Availability

    • Achieving Security involves People, Procedures, and Technology

    • The same is true for Privacy


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    Laws and Policies govern Privacy

    • Privacy is no longer a vague concept

    • It has been legislated

    • A body of case law exists

    • Federal laws, State Laws, Supra-national laws

    • Even the US Constitution has a bearing

    • Lastly, companies have Policies


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    Topical Relevance

    • Massive on-line databases of people

    • Extensive on-line interactions between companies

    • Millions of daily transactions between companies and customers

    Who owns all this, and who has a need to know?


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    Motivation for Companies

    • Maintain competitive edge

    • Ensure legal compliance

    • Enhance company image

    Privacy is a requirement – not a customer delight


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    Many Privacy Rights are embedded in Criminal Statutes

    • US Mail

    • Telephone conversation

    • Library borrowing

    • Bank records

    • Student records

    • Etc.

    Federal and States


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    Plethora of Laws

    • FERPA

      • Student records

    • ECPA Electronic Communications Privacy Act

      • Most basic act for access, use, disclosure, interception and privacy of electronic communications

    • Section 208 of The E-Government Act

      • Federal agencies should protect PII collected


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    Plethora of Laws

    • HIPAA Health Information Portability and Accountability Act

      • Medical records

    • Gramm-Leach Bliley Act

      • protects consumers’ personal financial information held by financial institutions.

    • The (Federal) Privacy Act of 1974

      • FTC approved “fair information practices” that are widely accepted principles of privacy protection


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    Plethora of Laws

    • Section 208 of The E-Government Act

      • Federal agencies should protect PII (personally Identifiable Information) collected

    • Sarbanes-Oxley

      • accounting fraud

      • securities-law violations

      • Enhanced penalties for white collar crime

      • executives directly responsible for problems

      • Accurate records to be maintained for 5 years

    • Basel II


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    Plethora of Laws

    • CAN-SPAM Act

      • Has not yet succeeded in reducing unwanted e-mail

      • New measures being agreed on by MS, Amazon, Brightmail, etc to filter spam

    • Massachusetts court decided that ISPs may read subscribers’ messages

      • But all major ISPs disavowed any desire to read e-mail


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    Patriot Act

    • USA Patriot Act

      • Negates almost every privacy prescription heretofore stated, under special circumstances

      • The circumstances are not tightly defined

      • Hence, Governmental abuse is expected & has happened

      • Not only allows the Government to violate Privacy, but mandates that companies collude in this

    Is this the anti-law of Privacy?


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    Cookies and Privacy

    • Simply surfing makes you the target of spyware

    • Cookies placed on your computer can

      • Profile your on-line behavior

      • Track websites you have visited

      • Trigger targeted pop-up ads

      • Record search terms and form entries

    • Security scanners like Spybot and Zone Labs can detect and remove such intrusive cookies

    • Try a free scan on your computer and see what you get:

      • http://download.zonelabs.com/bin/free/cm/index4.html


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    Surfing Dangers

    • Simply surfing can have your browser‑driven online financial security information stolen:

      • http://www.eweek.com/article2/0,1759,1618052,00.asp

    • The attacker uploaded a small file with JavaScript to infected Web sites and altered the Web server configuration to append the script to all files served by the Web server (IIS).

      • No anti-virus program would stop it,

      • no firewall would slow it down and

      • no shipping IE security patch would even notice it.

      • Visit the page, get the infection. It was that simple.


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    Surfing Dangers - Solution

    • Use Firefox (browser component of Mozilla, open source)

    • That’s the recommendation of CERT

      • http://www.mozilla.org/products/firefox/

    • You may not enjoy Active X (MS specific code in some web-sites)


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    ISO/IEC 17799

    • Standard based on BS 7799

      • Important, detailed, complex standard

      • Covers People, Process and Technology

      • A wide-ranging document on Information Security

      • Has numerous recommendations in detail

      • Companies can be certified against this standard


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    Understanding and Implementng ISO/IEC 17799

    • Start with Toolkit

      • Full ISO17799 compliant information security policies

      • Disaster recovery planning kit

      • Road map for certification

      • Audit kit (checklists, etc) for a modern network system

      • Comprehensive glossary of information security

      • Business impact analysis questionnaire

    http://www.iso17799-made-easy.com/


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    Privacy Under Fire

    • Patriot Act

      • 6 month wiretap without court order

    • “Patriot Act 2”

      • More expansive laws than Patriot Act

    • Privacy vs. Freedom of Information Act

      • School and University e-mails

    • Privacy vs. general public good

      • Your best interests vs. 10 million+ peoples’


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    Laws Protecting Privacy

    • 4th Amendment of the U.S. Constitution

    • Electronic Communications Privacy Act

    • HIPAA

    • Intellectual Property laws

      • Copyright

      • Trademark


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    Search Warrants

    • Obtained by law enforcement by testifying to an uninvolved public agent of judicial review naming

      • The crime being investigated under probable cause

      • The specific location(s) to be searched

      • The items and names of persons to be seized


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    Search Warrants

    • Search warrants do not solely apply to physical domains

    • Also apply to wire taps, either phone or network

    • Patriot Act expands the powers of law enforcement, allowing for easier granting of warrants requesting wire tap access


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    Search Warrants

    • Must be clear and concise

    • Items seized must be listed or at least covered in the text of the warrant

    • Errors or omissions may result in evidence being thrown out of court


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    Subpoenas

    • Subpoena –The process by which a court orders a witness to appear (and sometimes present evidence) at a judicial proceeding and produce certain evidence for purposes of discovery

    • For example, using ISP connection logs to determine a particular subscriber’s identity


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    Court Orders

    • Court Orders – Official judge’s proclamation requiring or authorizing the carrying out of certain steps by one or more parties to a case

    • For example, using a packet-sniffer on an ISP’s router to collect all packets coming from a particular IP address to reconstruct an AIM session.


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    Chain of Custody

    • Begins with seizure of items during the execution of the search warrant

    • Accounts for every minute the items are in custody

    • Must be maintained from seizure through court appearance

    • Failure to maintain chain of custody may result in inadmissibility of evidence


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    Chain of Custody

    • Important for businesses as a case may end up in court

    • Failure to adequately show computer or item did not have an opportunity to be tampered with may result in an unfavorable judgment


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    Video

    • “Search and Seizure”

      • U.S. Secret Service


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    Summary

    • Many legal issues facing technology and computer forensics from start of investigation through court testimony

    • Complexities and adaptability of technology also potentially create a myriad of issues

    • Following well-documented procedures for obtaining and handling evidence


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    References

    • US Department of Labor / Office of Administrative Law Judges www.oalj.dol.gov/faq19.htm - Supoena Form

    • Cyberlaw: Problems of Policy and Jurisprudence in the Information Age – Patricia L. Bellia, Paul Schiff Berman, David G. Post, Thomson/West 2003

    • 4th Amendment

      http://caselaw.lp.findlaw.com/data/constitution/amendment04/

    • IEEE Code of Ethicshttp://www.ieee.org/portal/index.jsp?pageID=corp_level1&path=about/whatis&file=code.xml&xsl=generic.xsl

    • COPS.org Code of Ethicshttp://www.cops.org/ethics.htm

    • Court Orderhttp://www.wordiq.com/definition/Court_order


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