Symantec Norton Internet Security 2011 (3-PC) for $4.99 shipped after code EMCYTZT621. and a $40 rebate.  Note that this is valid through 7/24 only.  Here is a screenshot for your reference.  It provides protection against viruses and spyware, along with a 2-way firewall and more.  This Norton Internet Security 2011 usually sells for over $65.