Code:
like Crasher,Spammer or account hack etc, rocn,
it's not "magic", a crash is caused by a programming error and you must first find it.
what you call "rcon hack" is a particular type of vulnerability.
why you think that such software is affected by these vulnerabilities and what are the proofs of what you say?
software security (aka "vulnerability research") is not a magic thing like many kids think.