I. Emails from people trying to infect your system and steal your friends’ email addresses for spam
I.1 Pictures of Osama Bin Laden hanging or Arnold Schwarzenegger’s suicide note I.2. Email from your system administrator or other familiar sender that says your email could not be delivered, or some similar statement.
I.3. Email with subject “Against!” or “Revenge”
I.4. Email with subject Re_ and body with animals or foto or other subjects
II. Emails from people trying to steal your identity (and your money)
II.1. Update Your Billing Information (from eBay)
II.2. Your account at eBay has been suspended
II.3. Your account at Wells Fargo has been suspended
II.4. Notification of US Bank Internet Banking
II.5. Attn: Citibank Update
III. Emails from people trying to fool you into hurting yourself or your friends and coworkers
III.1 Subject: “jdbg” Virus: how to detect and remove.