Cryptocurrency is specially profitable for hackers, and as many people already pointed out, exchanges and large cryptocurrency websites are a main target for hackers. The thing is that, they are always going to be a main target for hackers, no matter what security measures are taken. Below the headline of the article it says:
"There have been at least three dozen heists of cryptocurrency exchanges since 2011 and more than 980,000 bitcoins stolen, worth about $4bn"
Which is pretty alarming to be honest.
To answer the questions, we don't know who these hackers are, like hackers looking for new opportunities, good exchanges should be always looking to have a strong security foundation which is the basis of their trust after all. The only thing that'll help minimizing these thefts are the organizations themselves solving security problems and innovating on the security aspect of their business and that's how you stop them.
Now, it's really important that not only exchanges take further security measures, but also minimize the amount of people that are not taking strong security measures in order to protect their cryptos or the people that are victims of obvious scams. We always need more education on that aspect and I'm sure that new technologies are going to tackle this problem.
We need this hackers to learn where we did mistake on sites.They will take advantage of weakness and reward will be big.But almost every ico announce bug bounty and this time they can hack legally..
This is a very good point. And I'll say that bounties on legal hacking for spotting security issues for organizations are a big step towards minimizing harm and rewarding the people that are investing their time on improving a technology. One good example of this is the Ethereum Bounty Program.
