malmo
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ZetaDisplay wants your shop floor to earn its keep
The Swedish digital signage company has spent two decades making screens useful. Now it is helping retailers turn the space between the shelves into a measurable advertising business.
Johan Brissmyr
Johan Brissmyr is the CEO and co-founder of Castle, a security company that helps online businesses detect fraud, bots, and account takeover in real time. A computer scientist from Lund University, he started building web products in Malmo, Sweden before moving to Silicon Valley through Y Combinator and relocating the company to New York. Castle grew out of a password-storage side project that revealed a bigger opportunity in behavioral risk scoring, and today combines device fingerprinting, behavioral signals, and analytics into APIs used by companies of many sizes.