Surely that should have more parameters, otherwise anyone who alters any data at all would be committing a crime, regardless of whether they created/owned it or not. It's up to enforcement. If someone didn't grant you access to edit or change that data (really if you edited the source code at a home computer for personal use, quite frankly I don't think anyone would notice or even care). That being said, I'm sure it's only used for when the mens rea has malicious intent, which shown in this case, there was some intended.