Mt.Gox Account secured with Yubikey but still had 29 BTCs stolen - page 6.

CIYAM

legendary

Activity: 1890

Merit: 1086

Ian Knowles - CIYAM Lead Developer

Quote from: rufusBTC on September 14, 2013, 12:33:23 PM

there should be a way to reverse these type of transactions when something unauthorized occurs. that's the weakness of BTC right now.

Bitcoin doesn't work like that but exchanges could very easily let you set up your account so that say a BTC transfer won't occur until 24+ hours after requesting it giving you time to cancel such theft attempts.

Bitcoin's *strength* is that it isn't reversible - but that does make it harder when building services that use it to help protect the users (it's always going to be a trade-off between speed and expense).

rufusBTC

jr. member

Activity: 121

Merit: 1

The World’s First Blockchain Core

there should be a way to reverse these type of transactions when something unauthorized occurs. that's the weakness of BTC right now.

ardana123

hero member

Activity: 504

Merit: 500

Maybe his computer was on at the time, logged in on his Gox account? Someone might've taken over the computer.

01BTC10

vip

Activity: 756

Merit: 503

Quote from: ardana123 on September 14, 2013, 12:10:15 PM

Must be the api access you enabled if you had a yubikey configured.

Quote

API key was only granted permissions to get_info and trade.

ardana123

hero member

Activity: 504

Merit: 500

Must be the api access you enabled if you had a yubikey configured.

BurtW

legendary

Activity: 2646

Merit: 1137

All paid signature campaigns should be banned.

https://blockchain.info/address/1Zq3rJPzNMi9vJ1KqT9SKfAcfHx8NYVds

Just looking for clues...

Why 2.00 + 2.00 + 25.20793 to get them out instead of one transaction?

Then they moved 52 out of their wallet and we get to see a lot of the addresses in their wallet.

Then they moved 101 out of the same wallet and we get to see a lot more of the addresses in their wallet.

So it appears we have a lot to go on here...

47 of the 101 ended up here:

https://blockchain.info/address/1AYTN944QaxUJiy2kkeyMoue1DNXBtvFTy

56 of the 101 ended up here:

https://blockchain.info/address/12HXeLmimYVQUz2kojkPcMHHPQYPMaAond

Some of the coins went through this interesting address:

https://blockchain.info/address/1LBCfs6JUWCgZWzHddHuiZsSMZ7E64YmcP

Does anyone recognize this mixing method?

JRam

newbie

Activity: 31

Merit: 0

Quote from: Pokerfan on September 14, 2013, 08:49:59 AM

Go into "Security Center" -> "Current API Keys"

Confirm there's nothing there.

I use the TobbeLino trade bot https://github.com/TobbeLino/GoxTradingBotTobli but its API key was only granted permissions to get_info and trade. This bot was also disabled for over a week so I don't think this is the cause.

Pokerfan

full member

Activity: 130

Merit: 100

Go into "Security Center" -> "Current API Keys"

Confirm there's nothing there.

Luno

sr. member

Activity: 504

Merit: 250

You don't have Google authenticate or a paired cell phone also on your withdraw methods?

If a Yubikey can be faked every university or other business using them are in trouble and no, you can't sniff the key from a Yubikey it's a hard coded non recursive algorithm that calculates the last characters of you key every time you press the button. The long press used for withdrawals is even more complex.

So Gox hack or inside theft?

01BTC10

vip

Activity: 756

Merit: 503

Quote from: JRam on September 14, 2013, 08:38:20 AM

Quote from: 01BTC10 on September 14, 2013, 08:18:20 AM

Quote from: JRam on September 14, 2013, 08:17:18 AM

Quote from: 01BTC10 on September 14, 2013, 08:13:09 AM

I know it sounds dumb but I remember reading about someone who had a YubiKey but forgot to activate it in his MtGox security center.

Can you clarify? I see my Yubikey specifically under "Withdrawals".

You should be good then.

Haha, well apparently not since someone still managed to steal from my account. I added screenshots of the Yubikey. Yubikeys aren't supposed to be easy to crack are they? I can only think of Mt. Gox itself doing this so I will never trust them again.

I don't have any clue what went wrong in your case but at least you didn't forget to activate your YubiKey like I've already seen in the past.

Does the OTP value I see is Google Authenticator? If you did a backup of the seed somewhere it could have been stolen.

JRam

newbie

Activity: 31

Merit: 0

Quote from: 01BTC10 on September 14, 2013, 08:18:20 AM

Quote from: JRam on September 14, 2013, 08:17:18 AM

Quote from: 01BTC10 on September 14, 2013, 08:13:09 AM

I know it sounds dumb but I remember reading about someone who had a YubiKey but forgot to activate it in his MtGox security center.

Can you clarify? I see my Yubikey specifically under "Withdrawals".

You should be good then.

Haha, well apparently not since someone still managed to steal from my account. I added screenshots of the Yubikey. Yubikeys aren't supposed to be easy to crack are they? I can only think of Mt. Gox itself doing this so I will never trust them again.

01BTC10

vip

Activity: 756

Merit: 503

Quote from: JRam on September 14, 2013, 08:17:18 AM

Quote from: 01BTC10 on September 14, 2013, 08:13:09 AM

I know it sounds dumb but I remember reading about someone who had a YubiKey but forgot to activate it in his MtGox security center.

Can you clarify? I see my Yubikey specifically under "Withdrawals".

You should be good then.

JRam

newbie

Activity: 31

Merit: 0

Quote from: 01BTC10 on September 14, 2013, 08:13:09 AM

I know it sounds dumb but I remember reading about someone who had a YubiKey but forgot to activate it in his MtGox security center.

Can you clarify? I see my Yubikey specifically under "Withdrawals".

01BTC10

vip

Activity: 756

Merit: 503

I know it sounds dumb but I remember reading about someone who had a YubiKey but forgot to activate it in his MtGox security center.

JRam

newbie

Activity: 31

Merit: 0

All of the trade activity in the screenshot are not mine. I originally had $4,000 in USD but the culprit converted it to BTC and withdrew.

How hard is it to bypass the Yubikey? I was not even awake at around 4 AM when this happened so I don't think it is malware or plishing. In case this is some form of delayed malware, I'm doing a full scan at the moment with Malwarebytes. I am beginning to suspect Mt.Gox internal operations of doing this especially after hearing all the news about Mt.Gox's financial problems.

When you think about it, the IP address that stole my coins was from China and I am based in the US. Any half decent business would find this to be a red flag and delay the withdrawal. Maybe Mt. Gox is deliberately letting these glaring red flags slide?

I don't want to believe it but the possibility of the largest BTC exchange stealing from its users paints a grim picture for BTC. If my suspicions are correct, I hope this serves as a warning to the rest of the BTC community.

Topic: Mt.Gox Account secured with Yubikey but still had 29 BTCs stolen - page 6. (Read 8587 times)