You can report those spam/spoof/phishing/pharming messages to or to

Reporting spoof messages is a task unless you are willing to volunteer some of your time in reporting. Good for the community Happy

As for your other question, you can use a program that will alert you if there is email communication going on without your consent.
Always scan the system using up-to-date antivirus and antispyware because some malware spreads itself via email.