"I absolutely stand by the million-dollar prediction," he told Newsweek.
"If cryptocurrencies ever become mainstream, then prices could go a lot higher; if not, many become worthless."
Reports indicate that the price rise was attributed to bitcoin exchange traded funds (ETFs).
Cryptocurrency advocate asserted: "The McAfee Redemption Unit is real and coming."
"They say I sold out 'cause I use my tweets to promote, but the last 200 ICOs that lined up, we rejected 195 and chose 5. I only promote what I believe," McAfee said.
Move over Nigerian email scam, fraudsters have a new sneaky trick.
His wife says her former pimp forced her into colluding with cartels to have him kidnapped following claims that he hacked the Belize government.
Johnny Depp is rumored to be playing John McAfee in a biopic, but the cybersecurity legend says Morgan Freeman's character most closely matches his own.
Cybersecurity pioneer John McAfee warns of the "obvious incompetence of the FBI."
Cybersecurity pioneer John McAfee says only a fool would think there is effective cyber defence.
But McAfee tells Newsweek he would not be Trump's cyber chief if offered the role.
John McAfee says attacks are "harbinger of near-future attacks that will be more devastating."
Libertarian presidential hopeful John McAfee discusses drink, drugs and disinformation.
Presidential hopeful John McAfee says, "If anyone can dance circles around Trump, it would be me."