Have you received an email from “Apple” that says something like – “Recently, there’s been activity in your Apple account that seems unusual compared to your normal account activities.” ?

This is a phishing scam (not from the real Apple) designed to get your Apple ID and password. Do not download the attachment and delete the email!

A good clue can be to look at the to email address, and if you have more than one email account, then you can tell if this is the email account associated with your Apple (or other) account…if its not then you know right away its a scam.