Did bitcoin heists really happen?

In the realm of cryptocurrency and finance, the question of whether bitcoin heists truly occurred has sparked much debate. Have there been instances where large sums of bitcoin were unlawfully taken from their rightful owners? Have hackers exploited vulnerabilities in exchanges or wallets to execute elaborate thefts? What evidence, if any, exists to support these claims? Moreover, how do we safeguard against such occurrences in the future? The potential for bitcoin to be targeted by cybercriminals raises concerns regarding its security and stability, prompting a closer examination of these alleged heists.