this is clear proof, if the hacker is fabulous than security,
why is a hacker more powerful and fabulous than security? because they never give up, they have proven that there is no security that is 100% safe on the internet
First of all it's not about the security issue. You should research first "Why crypotcurrency was stolen and how they did it". Than it'll be clear that many users are not aware of ponzi scheme or their account security. Only in this point, hackers take advantage to stole crypto. So everything is well secure in the blockchain or cryptocurrency ecosystem. But users aren't aware about the account security or further researching.
I personally believe that blockchain security is the best,
if a wallet is hacked, I think it's the wrong user who keeps the key in a bad place, or the user's device has been infected by a virus
Of course blockchain is very secure. The only thing they can do is the 51% attack but it will cost millions of dollars to do that and I don't think that hackers will do that because they will get no incentive from it. The problem is exchanges, yes they can the best security in place, but hackers are always one step of the game.
They are good in finding security loopholes, API attacks that's why most of the time they are successful in exploiting exchanges. That's why the golden rule is that don't put too much money in an exchange so that you won't loss that much when attacks goes to work their magic.