Spoofing means faking an identity. Attackers pretend to be someone else to bypass security or gain trust.
IP spoofing forges source addresses. Ingress filtering helps block forged packets.
MAC spoofing changes a device's MAC address to bypass access controls.
Email spoofing forges the From header. Without SPF, DKIM, DMARC, anyone can impersonate your domain.
Caller ID spoofing fakes phone numbers for vishing attacks.
Verify identities through multiple channels. Never trust a single identifier.