Spoofing
Misrepresenting oneself by using fake e-mail addresses or masquerading as someone else
Redirecting Web link to address different from intended one, with site masquerading as intended destination
Sniffer: Eavesdropping program that monitors information traveling over network
Denial-of-service attacks (DoS): Flooding server with thousands of false requests to crash the network
Distributed denial-of-service attacks (DDoS): Use of numerous computers to launch a DoS
Botnets: Networks of “zombie” PCs infiltrated by bot malware