You are giving advice to a Windows computer user about the importance of maintaining a secure Windows environment. Rank the following in order of importance. Let 1 be most important. No two items should be ranked the same.
Using an up-to-date antivirus product and performing regular scans
Performing regular anti-spyware scans with an up-to-date antispyware product
Using an up-to-date software firewall
Installing “Critical” Windows updates in a timely fashion
Installing non-critical Windows updates in a timely fashion