General / Obvious / Introductory
You have to be careful in the kind of emails you open. If you don't know who its from, then don't open it, delete it. People may include attachments in their emails that are viruses, and it may be downloaded to your system if you open it.
about
A lot of people put scams out there where you provide information to an entity posing as a legit group but they end up using your information for fraudulent purposes. This is called phishing.
phishing definition
recognizing phishing scams