Rule 1.
NEVER trust user supplied data.
Once that rule was broken, any other rules broken became clear to everyone
replies(3):
NEVER trust user supplied data.
Once that rule was broken, any other rules broken became clear to everyone
Here's a better article: https://techcrunch.com/2017/07/25/hungarian-hacker-arrested-... - it seems like this was good faith security research (he disclosed the issue after testing it) and he couldn't use the transport pass he "stole" because he didn't even live in their service area anyway.
This arrest had nothing to do with stealing and all to do with putting well-connected, incompetent people in a very uncomfortable position.