U.S. authorities have arrested a second member of the hacking group known as LulzSec in connection with a cyber attack against Sony Pictures Entertainment that saw the leaking of thousands of emails, phone numbers, passwords and other personal details of people who had entered Sony contests.

Lulz Security really wanted to make it clear that its huge dump of Sony Playstation Network user data in June 2011 was very easy to pull off, and a lot of fun, but now that a culprit has pleaded guilty, he faces years in prison after getting entirely sold out. Far less fun. Of course, 24-year-old Cody Kretsinger probably won't get close to the maximum sentence of 15 years, but at this point he's …