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Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

reuters.com

111–120 of 312 posts

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#111

Posting this as a top level comment as well (probably a better idea): The coins stolen are XEM ( https://nem.io/ ) not Bitcoin. They're currently tracking the stolen coins to ensure they are not sold. Preliminary evidence suggests that it was a private key stolen and not a network problem. Disclaimer: Am somewhat associated with the team, and I hold a small amount of XEM. Feel free to ask questions.

any calls for a hardfork yet?

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#112

Earlier quoted context omitted.

The possibility of an exchange getting hacked is much lower than the possibility of users losing founds by transferring them to their own wallet. I run a cryptocurrency forum and in 99% of reported cases users lost their founds by moving money from an exchange to a local wallet or even a hardware wallet. I always recommend everyone to keep it on an exchange.

Honest question. How is this possible? Isn't it as simple as copy and pasting the public address?

Among other things, there's malware in the wild that rewrites public addresses when you paste them into the major exchange's "send coins" forms.

https://www.investopedia.com/news/new-bitcoin-malware-change...

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#113

Earlier quoted context omitted.

The possibility of an exchange getting hacked is much lower than the possibility of users losing founds by transferring them to their own wallet. I run a cryptocurrency forum and in 99% of reported cases users lost their founds by moving money from an exchange to a local wallet or even a hardware wallet. I always recommend everyone to keep it on an exchange.

Honest question. How is this possible? Isn't it as simple as copy and pasting the public address?

Well, you’ve also got to keep track of the private key...

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#114

Earlier quoted context omitted.

I would have had Bitcoin at a much more opportune time if I could have gotten Armory to work. The idea that one must download the entire blockchain makes maintaining a wallet very difficult for some, esp. if the wallet software doesn't accept the data at the end of the dozens+GB download.

The idea that one must download the entire blockchain makes maintaining a wallet very difficult Totally false. There are plenty of wallets that allow you to connect to a decentralized network of servers hosting the blockchain. Electrum, Multibit to name a few.

For Ethereum as well— the official wallets will let you run them in light mode which brings the chain size from approaching 100GB down to a few GB

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#115
post #56

Earlier quoted context omitted.

Exactly. And the top notch exchanges keep everything in cold storage AND they take out massive insurance policies on it. Keep coins there unless we are talking millions of $ worth.

The insurance coverage is limited and doesn't cover theft of individual accounts.

[deleted]

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#116
post #111

Posting this as a top level comment as well (probably a better idea): The coins stolen are XEM ( https://nem.io/ ) not Bitcoin. They're currently tracking the stolen coins to ensure they are not sold. Preliminary evidence suggests that it was a private key stolen and not a network problem. Disclaimer: Am somewhat associated with the team, and I hold a small amount of XEM. Feel free to ask questions.

any calls for a hardfork yet?

The president of the NEM.io Foundation is against it [1]

[1] https://twitter.com/2017Lon/status/956880456154099712?s=17

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#117
post #75
post #41

Earlier quoted context omitted.

I think the biggest problem is having a single point of failure. I personally keep about half my coins on exchanges, but no exchange holds more than 10%. Storing your coins might be the best solution in theory, but in practice unless you're very savvy about the whole stack - hardware, OS, software and blockchain tech, it's hard to be sure you're not making a dumb mistake and exposing your whole stack. Even hardware w…

paper wallet generation software can also have bugs or be intentionally rigged and people have definitely reported both quite a bit. You're right on with your approach -- I think the answer is multiple wallets -- even multiple brands of hardware wallets, multiple exchanges, multiple computers, multiple different types of paper wallets stored in different places, even multiple cryptocurrencies in case one has a catast…

I am not saying your wrong, but that kind of defeats the point of using a crypto coin in the first place.

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#118

Earlier quoted context omitted.

The possibility of an exchange getting hacked is much lower than the possibility of users losing founds by transferring them to their own wallet. I run a cryptocurrency forum and in 99% of reported cases users lost their founds by moving money from an exchange to a local wallet or even a hardware wallet. I always recommend everyone to keep it on an exchange.

Honest question. How is this possible? Isn't it as simple as copy and pasting the public address?

I've had an instance where the withdrawal to my wallet seemingly didn't even make it to a block on the chain. This happened on Coinbase and took over 2 weeks to resolve. With their non-existent support I pretty much considered that money lost until the whole thing finally got resolved. But I can definitely see somebody fat fingering the wallet address being one of the bigger reasons.

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#119
post #111

Posting this as a top level comment as well (probably a better idea): The coins stolen are XEM ( https://nem.io/ ) not Bitcoin. They're currently tracking the stolen coins to ensure they are not sold. Preliminary evidence suggests that it was a private key stolen and not a network problem. Disclaimer: Am somewhat associated with the team, and I hold a small amount of XEM. Feel free to ask questions.

any calls for a hardfork yet?

Nope, they're against hardforking. The current measure being taken is just tainting the hacker's accounts and blocking them at exchanges.

Re: Tokyo-based cryptocurrency exchange hacked, losing $530M: NHK

#120
post #2

I don't understand why news like this doesn't have that huge of an impact of bitcoin's price.. Bitcoin seems to be hovering around 11k~ as I'm writing this. It's been at the same price it seems for the past couple of days...

As far as I can tell the news hasn't hit the mainstream news yet. Might be a further dip when it does.
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