Theres always someone going to try breaking the law and penetrating security systems for money even before computers become very complex as they are today. Its not bitcoin's fault though but the websites handling them like exchanges.
yes i agree with you because i see there are many hacking news that happen with market exchanges website, i think why market exchange site not make their site really secure and can give save to their member. its sadly if market exchange have problem with their security website. if they want, they can ask or rent some website security agent to monitoring and control their website to make that site is secure and safe for their member.