Comcast customers can now get Norton™ Security. It protects your computer, files and identity without slowing you down. Plus, get the award winning OnlineFamily.Norton to safeguard your kids online - $160 dollar value at no additional cost with your Comcast high-speed internet subscription.
This link is for residential customers
For Business customers will post the link down in comments.
Norton -- well not the best of software for security but in case you were looking for this and are a comcast subscriber ...well download download download