The anonymity of the Internet seems to make some people believe that they can get away with almost anything online. But Nintendo may have just given future Switch hackers some reason to reconsider their actions after tracking down a man while playing online detective.

Earlier this year, Nintendo sued James Williamsmoderator of a Switch hacker page on Reddit who posted under the name Archbox. At the time, it was unclear how Nintendo determined that Williams was the man behind Archbox, but Game fileWilliams’ new report details some of Williams’ alleged missteps along the way.

Williams’ first apparent mistake was posting truly personal information on Reddit indicating that he had previously attended Midwestern University and was currently living near Phoenix, Arizona. Nintendo didn’t explain how it used this information to narrow down Williams’ identity, but it noted his second mistake: He sent his Switch to Nintendo for repair.

Once Nintendo identified Williams, the company’s lawyers sent a cease and desist letter directly to his address. According to the report, Williams responded that he would comply with their request, but denied violating Nintendo’s intellectual property. Subsequently, Nintendo notes that Williams stopped responding to the company and did not plead his case in court before the scheduled deadline. As a result, Nintendo received a default judgment against Williams.

Since Nintendo has accused Williams of selling computer hardware and offering modified Switch consoles with pirated games, he could face a substantial financial penalty. And if Nintendo’s detective activities are any indication, he won’t be the only pirate the company pursues.