
At DuckDuckGo, an engineering-trained dealmaker is making a commercial wager with unusual restraint: that a search business can grow without keeping a dossier on everyone who uses it.

Gabriel Weinberg is the founder and CEO of DuckDuckGo, the privacy-focused search engine he built from his basement in Valley Forge, Pennsylvania starting in 2008 - while simultaneously being a stay-at-home dad. A former MIT physicist who sold his first social network for $10 million just before Facebook made it obsolete, Weinberg turned DuckDuckGo into a billion-dollar company processing over 100 million searches daily, without tracking a single user. He is also the co-author of 'Super Thinking' and 'Traction', two widely-read books on mental models and startup growth.