Spoofing ??

 Spoofing is an act of masquerading as a valid entity through falsification of data (such as an IP address or username), in order to gain access to information or resources that one is otherwise unauthorized to obtain. There are several types of spoofing, including

• Email spoofing, is where an attacker forges the sending (From, or source) address of an email.

• IP address spoofing, where an attacker alters the source IP address in a network packet to hide their

•  identity or impersonate another computing system.

• MAC spoofing, where an attacker modifies the Media Access Control (MAC) address of their network interface controller to obscure their identity, or to pose as another.

• Biometric spoofing, where an attacker produces a fake biometric sample to pose as another user