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Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

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21–30 of 86 posts

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#21
post #7

Earlier quoted context omitted.

Another theory says that the webmasters are stealing the coins themselves. Perfect crime ;).

Sure, makes sense but why would I steal millions when I could do billions? - though it's better to err on side of petty.

Once you get past about $5million you might as well cash it in there rather than take any more risks - you're set for life either way.

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#22
post #14

It might be interesting to note that someone in the discussion under the original article (an unregistered user going by the name 'The one who knows') claims that "the admin of bitcash.cz Carlos upset the czech hacker comunity SooM.cz and accordingly to Blockchain ( https://blockchain.info/tx/44f66e60460926d1ac75667ce30604290... ) it looks like those hackers donated all the BTC that was on bitcash.cz to wikileaks".

If all BTC are on single place, it could be possible to recover them. Seems like well documented case, both parties are in civilized countries and court could take it.

Soom.cz is not very reliable source. Also Czech Linux community does not mention anything.

But according to some users it did not even used SSL!!!

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#23

This is the third story in two weeks. Either the hacking attempts are increasing or the site owners are cashing out. Either way it's bad news. Anyone with bitcoins must use an offline wallet.

It's been shown that it can happen, so it will continue to happen until it becomes unprofitable or infeasible.....

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#24
post #17

Every new day seems to bring another new Bitcoin scandal -- whether it's a hacked exchange, stolen wallets, frozen funds, collapsed Ponzi schemes, arrested illegal-market operators, or who knows what else. Yet, despite all this, Bitcoin keeps appreciating, recently reaching an all-time high.[1] -- [1] https://blockchain.info/charts/market-price?timespan=all

These stories of hacks & scandals and your link showing increasing-value only increases my desire to buy bitcoin. Also, this wild story[1] makes me want bitcoin too. What if I just want to buy $500 USD worth of bitcoin and just sit on it? Maybe 10 years from now it'll be worth close to a million, or maybe bitcoin will be shutdown and it'll be worth nothing. I think I can risk it. Who's trust-worthy these days if I want to make that purchase?

1. http://now.msn.com/kristoffer-koch-norwegian-man-buys-apartm...

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#25
post #7

Earlier quoted context omitted.

Another theory says that the webmasters are stealing the coins themselves. Perfect crime ;).

Sure, makes sense but why would I steal millions when I could do billions? - though it's better to err on side of petty.

^ lmm would have sold the methylamine & quit cooking

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#26
post #24
post #17

Every new day seems to bring another new Bitcoin scandal -- whether it's a hacked exchange, stolen wallets, frozen funds, collapsed Ponzi schemes, arrested illegal-market operators, or who knows what else. Yet, despite all this, Bitcoin keeps appreciating, recently reaching an all-time high.[1] -- [1] https://blockchain.info/charts/market-price?timespan=all

These stories of hacks & scandals and your link showing increasing-value only increases my desire to buy bitcoin. Also, this wild story[1] makes me want bitcoin too. What if I just want to buy $500 USD worth of bitcoin and just sit on it? Maybe 10 years from now it'll be worth close to a million, or maybe bitcoin will be shutdown and it'll be worth nothing. I think I can risk it. Who's trust-worthy these days if I wa…

Coinbase.com is a YC company that's trustworthy and convenient if you have a US bank account

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#27

Earlier quoted context omitted.

Brainwallets are never a good idea. See here: https://www.google.com/search?q=brainwallet+(stolen+OR+hacke...

Uh, no. Brainwallets with weak passphrases are a bad idea. Every case of a brainwallet theft has been due to users coming up with predictable passphrases to generate the key. Most brainwallet private keys are simply a SHA256 hash of a passphrase, which is fairly easy for a dedicated attacker to crack via bruteforce or dictionary attacks, yes. But if you use, say, a 12-word sentence with completely random words, like…

Just wanted to add a note that you can come up with whatever deterministic process you want to generate the keypair.

For example SHA256(MySuperSlowAwesomeLongHash("fire pickle shipment lachrymose deity unwitting pernicious obstacle kitchen tumbleweed mannequin erudite"))

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#28
post #24
post #17

Every new day seems to bring another new Bitcoin scandal -- whether it's a hacked exchange, stolen wallets, frozen funds, collapsed Ponzi schemes, arrested illegal-market operators, or who knows what else. Yet, despite all this, Bitcoin keeps appreciating, recently reaching an all-time high.[1] -- [1] https://blockchain.info/charts/market-price?timespan=all

These stories of hacks & scandals and your link showing increasing-value only increases my desire to buy bitcoin. Also, this wild story[1] makes me want bitcoin too. What if I just want to buy $500 USD worth of bitcoin and just sit on it? Maybe 10 years from now it'll be worth close to a million, or maybe bitcoin will be shutdown and it'll be worth nothing. I think I can risk it. Who's trust-worthy these days if I wa…

I think https://localbitcoins.com/ it's still one of the safest way to buy bitcoins.

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#29
post #27

Earlier quoted context omitted.

Uh, no. Brainwallets with weak passphrases are a bad idea. Every case of a brainwallet theft has been due to users coming up with predictable passphrases to generate the key. Most brainwallet private keys are simply a SHA256 hash of a passphrase, which is fairly easy for a dedicated attacker to crack via bruteforce or dictionary attacks, yes. But if you use, say, a 12-word sentence with completely random words, like…

Just wanted to add a note that you can come up with whatever deterministic process you want to generate the keypair. For example SHA256(MySuperSlowAwesomeLongHash("fire pickle shipment lachrymose deity unwitting pernicious obstacle kitchen tumbleweed mannequin erudite"))

True. Many people appear to use http://brainwallet.org or similar sites though; they don't really understand what hashing functions are, so they trust these sites to securely generate a private key.

Someone should really make an alternative with bcrypt or scrypt.

Re: Czech bitcoin exchange Bitcash.cz hacked, up to 4,000 user wallets emptied

#30
post #17

Every new day seems to bring another new Bitcoin scandal -- whether it's a hacked exchange, stolen wallets, frozen funds, collapsed Ponzi schemes, arrested illegal-market operators, or who knows what else. Yet, despite all this, Bitcoin keeps appreciating, recently reaching an all-time high.[1] -- [1] https://blockchain.info/charts/market-price?timespan=all

Bitcoin continues to appreciate, because positive developments surpass negative ones, by far. In the last week alone:

- Winklevosses: Bitcoin worth at least 100 times more: http://www.cnbc.com/id/101190181

- Federal Reserve economist says bitcoin is a remarkable technical achievement: http://www.coindesk.com/federal-reserve-economist-says-bitco...

- Shopify (70,000 merchants!) accepts Bitcoin: http://thenextweb.com/insider/2013/11/09/shopify-now-accepts...

- China fuels Bitcoin surge to record high: http://money.cnn.com/2013/11/12/investing/bitcoin-record-hig...

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