LinkedIn has verified more than 55 million of its users, for free, in order to combat the spread of misinformation fueled by the rise of artificial intelligence, the company told CNBC.The Microsoft-owned service said it has the most verified individual human identities of any major social network. In November, the company will begin showing its user verification badges within the primary LinkedIn feed. "You now see things like deep-fake videos, photos that are increasingly harder with the naked ...