CERT, "TCP SYN flooding and IP spoofing
attacks," CA-199621, CERT Advisory, 2000.
In Section 2, we review the existing work in DDoS and IP spoofing
The group also noted that Skype and Facebook gave IP numbers to states, advising to use IP spoofing
Some spammers, however, engage in IP spoofing
, forging the headers in their e-mails, or they access computers over the Internet that are unprotected by firewall software and turn them into zombies, sending out spare from them.
* IP spoofing
: a technique used to gain unauthorized access to computers, whereby hackers send messages to a computer with a deceived IP address as if it were coming from a trusted host.