Suppose that you are the network administrator for a large company. (a) your company will be held liable for any spoofing attacks that originate from within your network (i.e., packets leaving your network with spoofed ip header information). What you can do to prevent spoofing attacks by your own employees is: to ensure that there is email security by using:
To prevent external spoofing attacks,
Open Exchange  Management. Navigate to Mail Flow > Rules. If the sender is outside the company and the sender's domain is one of your internal domains, create a new rule. Set the condition to Prepend the disclaimer and compose a disclaimer explaining why the email was recognized as fake.
A spoofing attack in the context of information security, particularly network security, is a situation in which a person or computer effectively identifies as another by misrepresenting data in order to obtain an illegal advantage.
Spoofing occurs in cybersecurity when fraudsters pretend to be someone or something else in order to gain someone's confidence. Typically, the goal is to obtain access to systems, steal data, steal money, or propagate malware.
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