Hundreds of leaked Stripe merchant keys have exposed a serious risk for online businesses and their customers. The collection contains active credentials tied to hundreds of accounts, allowing a criminal to use payment tools that should remain strictly private. It includes roughly 35 GB of customer and payment information gathered from 659 merchant accounts, affecting about 688,000 people. Stolen keys may have come from infostealer logs, public code repositories, exposed environment files, or poorly protected backups, showing how one lost secret can become a large-scale account takeover. Hundreds of Leaked Stripe Merchant Keys Expose Payment The forum listing falsely claimed that Stripe itself had been hacked.