I saw this going through my Reddit early news. I don't think this will have any negative impact on the market.
I have always wonder the security level of Cryptocurrency exchanges. Although am not a Cyber-security expert, but have once heard of something called "multiple signature" been required for withdrawal.  Such fear of exchanges been hacked is a course for concern for someone wanting to invest big in the market. My take is that: for now, use well trusted exchanges that have zero tolerance for security breaches, and try not to leave too much fund in an exchange. I hope customers get compensated since it's a management lapses.