David Ulevitch, head of Cisco's security business, has a problem with the hype around artificial intelligence, the field that encompasses the booming computer science discipline of machine learning. Suddenly, everyone in the tech world is buzzing about the subject. Marketers, especially ones in the cybersecurity industry, have started plugging it as something of a panacea; there's no network AI can't protect, if the salespeople are to be believed. "The real threat in security is not whether we have things that are too smart," Ulevitch told Fortune in advance of his Wednesday RSA security conference keynote, during which he planned to touch on the topic. Whenever someone starts dropping the latest buzzwords--algorithms, analytics, AI--Ulevitch tunes them out, he said.