John McAfee, the cybersecurity luminary, was slated to be on stage as the keynote speaker at the second annual Cyber Investing Summit on Wall Street, which is being held at The New York Stock Exchange on May 23, 2017. McAfee has a long history of speaking at popular business and technology events, and theres no known security incidents which have occurred in connection with any of his appearances. The event’s co-founder said McAfee would not be allowed in the NYSE building due to security concerns”]