Correa is not necessarily a master hacker, but got access thanks to a combination of lax protocol and a little bit of luck. Astros GM Jeff Luhnow used to work for the Cardinals before taking the Houston job in 2011. Correa happened to know his old boss’ password from his time with the Cardinals, which Lunhow failed to change significantly after switching teams.
It may not seem like much, but it is still unauthorized access to a computer system, which is the definition of hacking as a crime. It’s probably best to keep that in mind the next time you want to guess your spouse’s password to their work email, for example. (Among many other seemingly “fun” pranks you could play on friends and family)
Crime. Jail time. For dropping in and checking another team’s scouting notes.