The provided link gives basic information as to what Spoofing is and how perpetrators commit the act. If you are curious enough give it a quick read. It is always good to be aware of hidden dangers in our online world. There is quite a bit of useful information on this site besides just this article that can help you better your knowledge against cyber attacks.

LifeWire: What is Email Spoofing? How does Spoofing Work? by Paul Gil (3 March 2018)