This a SCAM. Fortunately I am leary of FREE offers. Read the fine print and you will learn that in 6 months you will be billed for an auto renewal – my guess at Full retail which no one should ever pay. McAfee is always on sale somewhere.
Be aware, read the fine print
Kinda hard to be billed for auto renewal when you don’t submit any payment details to get this freebie — you just provide your email address.