Chris Roberts says he didn't mean any harm.
The security researcher was detained by the FBI last week after he tweeted—while on an airplane—about airline vulnerabilities to cyber attacks. Roberts said that when his plane landed, he was detained by law enforcement.
"I landed into Syracuse," Roberts told CNBC. "Everybody on the plane was told to sit down. Two uniformed officers and two FBI agents came onto the plane. I got taken off the plane—very civilized gents, very nice guys. And then a third gent joined them, and we had a several-hour lengthy conversation."
Then on Saturday, Roberts said he was on his way to a United Airlines flight to San Francisco for the annual RSA cyber security conference when the airline told him he would not be allowed on the flight or allowed to fly United again.
Roberts, the founder and chief technology officer of the cybersecurity firm One World Labs, says he has discovered a vulnerability in airline entertainment software that could allow hackers to seize aircraft controls. And his tweeting and public commentary about the alleged vulnerability has attracted the attention of the airlines and law enforcement.
Asked if he's a threat to the U.S. aviation system, Roberts said no. "What I'm trying to do is help, actually, U.S. aviation get a lot safer," he said.