If there is a new market, it is logical the emergence of new scams and thieves. The more money will be pumped into this area, the more it attracts those who do not seek to earn honest work.
Not everytime my friend. We know that some exchange or markets have the same strategies in terms of securing their sites but still hackers can still penetrate their security, that just mean that they are smarter but the are developing their skills.
Hackers are also securities, even though they steal informations, money and investments, they are the reason why most of the sites online are almost imprenatable in terms of hacking. I can say almost, not fully because we know that hackers can still develop their skills, they can still find a way to make an imprenatable site a vulnerable site.