This John McAfee guy is a complete fraud, and no one should believe him. In the Apple vs FBI fight for de-encryption, he sided with the FBI, and even offered to unlock the Apple encryption. His anti-virus software is known to spy on the users. Also, he is having shady business deals in Costa Rica, and is closely associated with the bing bankers.
To see is to believe so I think posting the source where you get the information is a good way to prove your and support your claim. Although Im a bit doubtful in McAfee too. I never tried their service because I'm already happy with Norton.