The Rise and Fall of BitTorrent’s Controversial Legacy

Twenty-five years ago today, an obscure programmer named Bram Cohen sent a brief note to a peer-to-peer mailing list. “My new app, BitTorrent, is now in working order, check it out here,” he wrote, including a link to his personal site.

The list’s founder replied, “What’s BitTorrent, Bram?”

Cohen never answered. The world would learn soon enough.

Over the next few years, BitTorrent exploded into the planet’s dominant file-sharing platform, triggering a tidal wave of digital piracy that permanently transformed Hollywood. At its peak, BitTorrent was estimated to account for a staggering portion of global internet traffic.

The technology itself was elegant. Unlike earlier systems that relied on central servers, BitTorrent broke files into tiny pieces and let users download from each other simultaneously. This peer-to-peer architecture made it incredibly efficient and nearly impossible to shut down.

Hollywood fought back with lawsuits, takedown notices, and even criminal prosecutions. Yet BitTorrent’s decentralized design meant that taking down one server rarely stopped the swarm. The cat-and-mouse game between content owners and pirates defined the early 2000s internet.

Cohen eventually tried to legitimize the protocol, launching BitTorrent Inc. and striking deals with media companies. But the brand remained forever tied to piracy. Legal streaming services like Netflix and Spotify eventually offered a more convenient alternative, draining BitTorrent’s mainstream appeal.

Today, the protocol still lives on for legitimate uses like distributing open-source software and large datasets. But its most famous chapter remains the one that reshaped entertainment, for better and worse. Cohen’s unanswered question from 25 years ago echoes through an industry still grappling with the aftermath.