An Italian cryptocurrency exchange called BitGrail says it was hacked and some $170 million worth of a currency called Nano is missing.

Read this for better understanding of the issue.
https://news.bitcoin.com/cryptocurrency-exchange-bitgrail-suspends-operations-losing-170-million-nano/

It is somehow really disturbing how hackers are so capable of doing such crime and steal millions. It is really saddening, maybe they should put up their security level to a higher point to stop this from happening.

I found a link as well, I just wonder why they do have different amounts of money lost. I wonder which one is telling the truth. Here it is. https://www.forbes.com/sites/francescoppola/2018/02/11/yet-another-theft-from-a-cryptocurrency-exchange-but-who-is-really-to-blame/#4c3d1765f6dd