Internet security threats Packet sniffing broadcast media o promiscuous NIC reads all packets passing by o can read all unencrypted data(e.g. passwords) oe.g. C sniffs B's packets A srC:Bdest: Payload B 7: Network Security 47: Network Security 4 Internet security threats Packet sniffing:  broadcast media  promiscuous NIC reads all packets passing by  can read all unencrypted data (e.g. passwords)  e.g.: C sniffs B’s packets A B C src:B dest:A payload