How the cookie became a monster

30 years ago, Lou Montulli set out to solve a fundamental problem with the internet, and accidentally created an entirely different one. On today's show, how the cookie went from an obscure piece of code designed to protect anonymity, to an online advertiser's dream, to a privacy advocate's nightmare.Subscribe to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoneyLearn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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Wanna see a trick? Give us any topic and we can tie it back to the economy. At Planet Money, we explore the forces that shape our lives and bring you along for the ride. Don't just understand the economy – understand the world.Wanna go deeper? Subscribe to Planet Money+ and get sponsor-free episodes of Planet Money, The Indicator, and Planet Money Summer School. Plus access to bonus content. It's a new way to support the show you love. Learn more at plus.npr.org/planetmoney