Domain spoofing
Making a domain or sender identity appear to belong to someone else.
Why it matters
Spoofing can trick users into trusting a message or destination.
Example pattern
An email claims to be from a brand but fails authentication or uses a lookalike domain.
How CheckLink can help
CheckLink tools can review sender and domain signals as context.
Related terms
Related guides
Check the signal in context
Security terms are useful, but real decisions need context. Use CheckLink to inspect available signals before you click.