Quote from: tranle789 on October 16, 2017, 09:39:55 AM

I think Bitcoin can not be attacked because Blockchain technology is now growing and no one knows how Bitcoin was created. Only exchanges are attacked and this really does not affect Bitcoin

What the hell are you talking about?
Everyone but ignorant know how bitcoin was created.
Start reading:
https://en.bitcoin.it/wiki/Main_Page

Quote from: xSkyer on October 30, 2017, 07:55:16 PM

There is one known attack that is possible to perform on Bitcoin. It's called a "51% attack". To perform this attack you have to have the majority of hashpower of Bitcoin network. Fortunately, this attack is too expensive and unlike to happen. Bitcoin network will be safe for a long time. Our computers are still too slow to crack encryption protocols.

Three is also a Sybil attack.
https://en.bitcoin.it/wiki/Weaknesses#Sybil_attack

And with growing blockchain space a drop in full nodes could render the protocol vulnerable.

Quote from: fulmetal08larz on October 30, 2017, 07:12:44 PM

In my opinion, everything online can be hacked but it would not be a piece of cake for the hackers, they would need extraordinary set of equipment, skills, method, time, etc. for the hack to commence. What we can do about this is to secure our keys and passwords, avoid clicking suspicious links, check your surroundings, have an offline wallet if you have massive amount of bitcoins, get a secure e-mail, etc. Hackers use different kinds of methods to hack, we must know how to protect ourselves from their methods.

The thread is about the blockchain and bitcoin , not your personal wallet.
There is no hack for both of them.