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.Andrew Chanin, co-founder of the Cyber Investing Summit and CEO at PureFunds, told InsideSources this past October that \u201cthe risks of failure at The New York Stock Exchange are extremely high\u201d.PureFunds provides investors with access to HACK (NYSEARCA:HACK) , the world\u2019s first cybersecurity ETF.Bloomberg called HACK \u201cThe One-Man, $1.2 Billion ETF Shop\u201d nearly two years ago when Chanin, 30 at the time, attracted over $1 billion within eight months after launching - one of the fastest ascents in ETF history. In its story, Bloomberg described Chanin as looking like Ferris Bueller in a suit.Right around the time of Chanin\u2019s remarks to InsideSource, one of the big financial market stories that garnered widespread media coverage was John McAfee\u2019s MGT Capital\u2019s delisting from NYSE.That didn\u2019t seem to phase Chanin. Just a couple of months after his astute media commentary concerning NYSE - and McAfee\u2019s MGT delisting - Chanin\u2019s Cyber Investing Summit announced that John McAfee would be their keynote speaker in 2017.In a Jan. 11, 2017 press release, Lindsey Lachman, the other co-founder of the Summit and quoted as the CEO at Specialty Investing Series (her current bio says CEO at Window Funding, LLC since 2015 and no websites could be found for either firm) - stated "Few people understand the opportunities and challenges of building a successful cyber company from the ground up better than John McAfee.\u201dThe 20-something-year-old Lachman, who has a media background including a B.A. in journalism from Lehigh University and was founder and Editor of Sports Ditz Blitz for four years, added \u201cMr. McAfee\u2019s experience founding McAfee Associates and taking the company public combined with his current role as CEO of MGT Capital Investments lends itself perfectly to discussing the future economic and security issues facing industry providers and investors."Chanin and Lachman included the details of McAfee\u2019s background in a press release that shared McAfee was employed as a programmer by NASA\u2019s Institute for Space Studies in New York City from 1968 to 1970.The day after their press release, the Cyber Investing Summit tweeted out \u201cNo fake news here! @officialMcAfee really will be delivering the keynote address at the 2017 Cyber Investing Summit May 23.\u201dSome Cyber Investing Summit sponsors followed with tweets of their own, as did McAfee from his own Twitter account.As momentum for the event continued building, McAfee\u2019s agent, Francois Garcia, said he was suddenly informed by Lachman that McAfee would not be allowed in the NYSE building due to \u201csecurity concerns\u201d, according to McAfee, who claims Lachman did not tell Garcia who she spoke with at NYSE.When we reached out to Lachman for comment on why McAfee was removed as keynote speaker, Lachman replied \u201cOur official statement is as follows: We look forward to the May 23rd Cyber Investing Summit, which is on track to be our biggest and best event yet." - Cyber Investing Summit Co-founder Lindsey Lachman.I followed up with Lachman seeking answers to the specific security concerns with McAfee's appearance, but received no response.\u00a0Chanin did not comment or respond to my inquiry.\u00a0An official inquiry is into NYSE media relations on the matter - and so far there\u2019s no word back from them.While McAfee would not say the amount for the NYSE talk, he did share that his fees range typically between $20,000 and $50,000, plus all travel and expenses, for a one hour talk, depending on travel distance, time away from home, and other variables.McAfee has a long history of speaking at popular business and technology events, and there\u2019s no known security incidents which have occurred in connection with any of his appearances.The Cyber Investing Summit has replaced McAfee with Michael Chertoff, co-founder and Executive Chairman of The Chertoff Group, and previously Secretary of the U.S. Department of Homeland Security from 2005 to 2009.Chertoff was hired by NYSE in November 2012, after an SEC computer incident, according to Reuters. It\u2019s not known if NYSE influenced the selection of a new keynoter, or if the event producers acted on their own in the surprise swap out.There\u2019s no word on the Cyber Investing Summit\u2019s website concerning refunds to attendees and sponsors who may have registered or committed to the event based in part on McAfee\u2019s appearance.More news is sure to follow. McAfee isn\u2019t known to roll over and play dead when he feels wronged. So far, he\u2019s put out a tweet concerning his speaking fee and the \u201csecurity concerns\u201d by NYSE.Got any conspiracy theories behind this? If so, head to Facebook to let us know.