Quicken online security

I have been doing some research online about Quicken.

I have looked into moving all my financial activities online. I have some questions and concerns about quicken and other such computer based financial programs.

OK here are my questions.

1. How secure is quicken?

2. What extra safety measures should I employ in accordance with the quicken security features?

3. How do I keep myself from being noticed online as a quicken user?

4. Will I need a hardware firewall or will a software firewall suffice?

5. Is there any other information I should know? I have been pretty hesitant to go high tech with this stuff, but there are so many benefits of a computer based program.

Thanks in advance!