While it's common to hear about the police or Nintendo itself going after hackers selling modified consoles, it's a bit more out of the ordinary for them to target someone hacking game files. In Japan, and as of a fairly recent law passing in 2019, editing video game save files is an illegal act, which is why a 23-year-old was arrested for doing so. The man had been "illegally" modifying his save data in order to obtain rare Shiny Pokemon, and then selling them. He managed to make over 1.15 million yen, or around $10,000 dollars by selling shinies to customers, being finally caught after he sold a Shiny Sobble to someone for $41 dollars. Arrested in Nagoya City, Japan, the suspect admitted his guilt, claiming he had been editing save files and profiting from it since November 2020.
Source: Asahi News - Translation Courtesy of Serebii