51% is no posible?
Hm.. Ok let´s get CEX.io
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FxJRFI0Y.png&t=663&c=qGQnirPV1BYOWw)
almost 30Ph/s
With total Network HashRate
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FXwrvgmj.png&t=663&c=6v65f70L_DdAOQ)
Is about 40%. But We need to remember that Network HashRate is jumping. Sometimes it´s going down or up. There is too big chance to make 51% attack. ( With small invest You can make it) Now let´s say that someone have a lot of bitcoins or money ( for example from SilkRoad or from "Hacked" exchanges or just bought them
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
) now small invest with 50% of Your bitcoins to take down some pool ( diffrent than cex.io) and who have more HashPower? Taking down some big pool or 2 small pools is so easy and You can do this with arround 5,000 - 10,000 $ invest. and if You know what are You doing it´s can bring You about 60% of your investment. It´s risky and not for everyone but YES IT IS POSIBLE.
Confirmations on BitCoin Network Take to much time... It is going worst and worst....