"If" someone finds a way to do fraudulent transactions? That already happened about 10 years ago when someone exploited an overflow bug to create billions of Bi

"If" someone finds a way to do fraudulent transactions? That already happened about 10 years ago when someone exploited an overflow bug to create billions of Bitcoin for the hacker within a single transaction. The bug was fixed and Bitcoin hard forked over it. Everybody moved onto the new chain.