When you move a message to the Junk Email folder, Outlook.com learns from that action to understand what kind of messages users consider to be junk. If you get an email that looks like spam or a phishing scam, report it.
Select one of the following:
Junk Use this option for routine unwanted email.
Phishing scam Use this option for an email that is trying to trick you into giving out your personal information such as your password, bank account information, or Social Security number. To learn more, see Deal with abuse, phishing, or spoofing in Outlook.com.
My friend's been hacked Use this option if you start getting junk email or phishing scams from a sender you would normally trust.