This page will teach you information on spoofing, phishing, captchas!
Spoofing is when someone creates a counterfeit of corporates email to trick people. If they click the link attached to the email, a virus can be automatically installed.
These tactics are used to trick people who don't pay close attention to details of emails. Make sure you do your research before clicking the attached link!
Similar to spoofing, phishing is when someone poses as someone else in emails, but in this case, in order to achieve a certain outcome.
Captchas is acroynm for "Completely Automated Public Turing test to tell Computers and Humans Apart". It is a question that is used in computing to determine whether the user is human or not. Commonly, they are texts/pictures that are easy to solve for humans, but difficult for computers to decode. They prevent machines to spamming.