Bangladesh, Oct. 2 -- The arrest in the Netherlands of a 24-year-old man allegedly connected to the ShinyHunters hacking group is more than another development in an increasingly crowded cybercrime calendar. It offers a glimpse into how modern criminal networks operate-and how quickly digital crime can spill into the physical world.

Dutch police announced on September 29 that they had arrested a 24-year-old man from Amsterdam on September 15 on suspicion of playing a role in ShinyHunters, a cybercrime and extortion group linked to numerous major data breaches. Investigators said they seized several data carriers and discovered substantial information on the suspect's laptop, including material concerning an alleged plan to arrange two m...