basil-nash
Uploaded by
10 SLIDES
243 VUES
100LIKES

Class 8

DESCRIPTION

Class 8. Questions about term paper—list of possible topics available later today Communications discussion Communications assignment. Intercepting Communications. Outline. Overview of the Controversies Intercepting Communications Cryptography and Its Uses

1 / 10

Télécharger la présentation

Class 8

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Class 8 • Questions about term paper—list of possible topics available later today • Communications discussion • Communications assignment Mary Jean Harrold

  2. Intercepting Communications Mary Jean Harrold

  3. Outline • Overview of the Controversies • Intercepting Communications • Cryptography and Its Uses • Encryption Policy: Access to Software, Keys, and Plaintext • Fundamental Issues Mary Jean Harrold

  4. Overview of Controversies • Communications Privacy Affected by • Interception of communications, including: • Telephone, E-mail, and Web activity. • Restrictions on secure encryption. • Exportation of strong encryption was viewed as a threat to national security. • CALEA (Communications Assistance for Law Enforcement Act. • Communications technology must assist law enforcement, not hinder. • Global surveillance systems. • The constitutionality of domestic systems and the necessity of international systems are under question. Mary Jean Harrold

  5. Intercepting Communications (1) • Wiretapping • Telephone: • Pre-1934: used widely by government, businesses, and private sector. • 1934: the Federal Communications Act disallowed unauthorized wiretaps; many ignored the law. • 1968: the Omnibus Crime Control and Safe Streets Act restricted wiretapping by requiring a court order. Q: Can law enforcement intercept communications without a court order? Mary Jean Harrold

  6. Intercepting Communications (2) • Wiretapping • New Technologies: • 1986: Electronic Communications Privacy Act (ECPA) and its amendments restricted government interception of e-mail, cell-phones, etc. • 2001: USA Patriot Act loosened restrictions on government wiretapping and communications interception. Q: Does the USA Patriot Act supersede ECPAs restrictions? Mary Jean Harrold

  7. Intercepting Communications (3) • Designing Communications Systems for Interception and Tracking • Obstacles to interception: • Incomplete pen-registers as a result of long distance service. • Packet-mode communications (e-mail, file transfers, Internet phones). • Solutions: • CALEA: Requires telecommunications equipment be designed to ensure interception by law enforcement (with court order). Q: Why did privacy advocates object to CALEA? Mary Jean Harrold

  8. Intercepting Communications (4) • Designing Communications Systems for Interception and Tracking (cont’d) • CALEA • Costs include modified hardware, software, and overuse by authorities. • Wiretappable systems vulnerable to criminal hacking, industrial spies, etc.. • Competition weakened due to restricted changes and diversities. • Civil liberties threatened by nationwide standard for surveillance. Q:CALEA allows for the interception of PINs. Do you support this use? Mary Jean Harrold

  9. Intercepting Communications (5) • Carnivore • FBI’s system to intercept e-mail with a court order. • Pro: Law enforcement needs this tool to fight crime. • Con: All e-mail goes through FBI’s Carnivore system. Q: Does Carnivore violate the 4th Amendment? Mary Jean Harrold

  10. Intercepting Communications (6) • NSA and Echelon • NSA (National Security Agency): • Collects and analyzes communications to find threats to national security. • Echelon: • Member nations intercept communications for each other. Q: Should the NSA be permitted to intercept all e-mail entering and leaving the U.S.? Mary Jean Harrold

More Related