Barstool's Dave Portnoy says he's beefed up security as trolls "open the floodgates" to lunatics: "It only takes one"

As a public figure with a massive social media following, Barstool Sports founder Dave Portnoy is no stranger to threats and abuse online. But recently, the entrepreneur says he's become "far more aware" of how he could face these threats in everyday life.

"You know, you start getting into these yahoos on social media, and there's, like, yahoos," Portnoy told "CBS Mornings" co-host Tony Dokoupil in an interview airing on "CBS Sunday Morning" this weekend. "I don't even know what they're saying. But they start talking about me, trying to get my name probably used because they're just in this endless cycle of needing to stay in the news."

Conversations about him can quickly spiral online and "open the floodgates on just lunatics," Portnoy said. In response, the businessman and social media