Arguably one of the most common online scams out there is phishing. Basically, phishing is carried out via email that is sent out by cybercriminals in an attempt to get useful information or money from individuals.
In some cases, phishing emails will come from a reputable sender, because their account was hacked. In other cases, these emails are made to mimic official mail sent by organizations.
Scammers that create emails looking like legitimate mail sent is called spoofing and means that everyone needs to be on their toes. These types of scam emails can come in all different forms, some ask for information whereas others ask for money.