1 year free subscription of McAfee Total Protection for 1 device, credit card required for new account activation (can be cancelled anytime to avoid auto-renewal charge or you can use a no value prepaid/debit card to activate). 

Credit card may NOT needed for existing account(just ignore it, you may still receive email said your subscription is activated and go to your account to check if everything is there).

BTW, if you input the credit card, the subscription can be cancelled anytime before 1 year period to avoid future charges.