1. Data Integrity and Security

2. Data integrity  data that has a complete or whole structure  a condition in which data has not been altered or destroyed in an unauthorized manner

3. Wiretapping  any interception of a telephone transmission by accessing the telephone signal itself

4. Electronic eavesdropping  the use of an electronic transmitting or recording device to monitor conversations without the consent of the parties

5. Who can legally monitor phone conversations?  Federal law enforcement officials may tap telephone lines only after showing "probable cause" of unlawful activity and obtaining a court order  must limit the surveillance to communications related to the unlawful activity and to a specific period of time, usually 30 days  Electronic Communications Privacy Act, 18 USC 2516

6. How does a cordless phone communicate?  Cordless phones operate like mini- radio stations.  They send radio signals from the base unit to the handset and from the handset back to the base.  These signals can travel as far as a mile from the phone's location

7. CELLULAR TELEPHONES  Cellular phones send radio signals to low-power transmitters located within "cells" that range from one block to 20 miles across  As you travel from cell to cell, the signal carrying your voice is transferred to the nearest transmitter

8. Data encryption  the coding (scrambling), of the data before it is transmitted over the communication link  Decryption is the decoding (descrambling), of the received data.

9. Algorithm  An algorithm is a set of instructions, in this case for scrambling the data  A key is a set of specific codes to be used by the algorithm to perform the encryption

10. Protect yourself in data communications  Keep your system software and patches up to date  A personal firewall  Keep your anti-virus software up to date  Turn off any services you don't need  Least secure: Wireless networking

11.  Video Video