Luckily it was 'only' a DDOS-attack. There is not much an exchange can do about this to prevent it from happening. A DDOS-attack is pretty expensive to execute. What did the attackers want to achieve with this? Spread FUD to decrease the bitcoin/altcoin price and step in with an investment at the bottom? Good to see the market didn't react to this attack.
I'm also happy that there was no negative reaction, price-wise. It leads me to believe that this market is increasingly resilient to outside attacks. It is still rife with manipulation, but I feel we're on the right path in terms of future stability. After this last crash, which resurfaced some of the insecurities I had long ago dismissed, the market seems to be on a healthy path. I'm not very fond of violent swings, downwards or upwards for that matter. A week later, it's as if it didn't even happen.