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Network Security. Encryption. Process of converting readable data into unreadable characters to prevent unauthorized access. Encrypt – make unreadable Decrypt – make readable. Encryption…Cont’d. Plaintext – data not yet encrypted Ciphertext – data that has been encrypted
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Encryption • Process of converting readable data into unreadable characters to prevent unauthorized access. • Encrypt – make unreadable • Decrypt – make readable
Encryption…Cont’d • Plaintext – data not yet encrypted • Ciphertext – data that has been encrypted • Encryption key – used to decrypt ciphertext into plaintext
Wi-Fi Security • Wireless networks are more susceptible than wired networks • LAN jacking (war driving) • practice of intercepting wireless signals by cruising through an area
Wi-Fi Security…Cont’d • War chalking • Chalkers make chalk marks on outdoor surfaces to indicate wireless networks • Symbols used to indicate passwords • Security Protocol • WEPs – outdated • WPA2 and WPA – more secure