Does your password have more than 8 symbols?

Have you activated spam filter of our mail client (ex. outlook, firebird, etc)?

Are you using TSL/SSL protocol when connecting to your mail server?

Do you use a firewall?

Do you check your email's attachments using online virus checking services?

Do you lock your Computer when you are having a break?

Do you keep your software updated?

Do you always check your USB flash memory storage media for viruses, or malicius software every time before you use it?

Do you use an updated antivirus software?