A spammer in California has been accused of driving around looking for un-secured hotspots and sending spam from the open connections: The original story here is one of those infuriating reads that doesn't mention how the guy got caught. It seems that historically people who have gotten caught for improperly using hotspots have done so by being stupid or unlucky. It's otherwise difficult to track someone down especially if they move around a lot looking for insecure hotspots.