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'I Kept My Multimillion Dollar Business Secret'

8/8/2019 4:15:27 PM

BBC -- A lot of entrepreneurs have a moment that makes them realise they're on to something. For Marcin Kleczynski it came while he was discreetly working on his antivirus software business from his student digs. Marcin, then only 18, was just about managing to juggle his start-up with participating in student life at the University of Illinois when he hit a snag.