IP Spoofing is used to gain unauthorized access to a network by impersonating a source with authorized access. IP spoofing is a cyber attacking technique. The hacker pretends to be someone else and conceals their identity to gain access to a network and hijack the browser. IP spoofing is also called IP address forgery or host file hijack. Learn how hackers can access your private information through IP Spoofing, and what steps you can take to prevent it.