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Topic: Deepbit offline... - page 6. (Read 19215 times)

legendary
Activity: 1288
Merit: 1076
May 29, 2011, 09:49:26 PM
#49
Has a cyberwar just started or something?

While the pools are off, you guys are doing solo mining, right?   You don't just have your computers wait doing nothing, do you?
member
Activity: 112
Merit: 10
May 29, 2011, 09:42:38 PM
#48
Is anyone elses eyebrow a little cocked at the fact that "other" is  75% of hash distribution?(bitcoinwatch.com)  Do we think it is just solo miners or a secret pool of cia super computers trying to destroy the block chain?

Thats a good point.

All this attention on deepbit, and their nearly half stake in the total hash rate.... not too many people seem to point out that "other" is just as big, and even more scary than deepbit. At least with the hash rate for deepbit, we know *who* that is.... "other" could be 90% 1 person as far as anybody knows.
newbie
Activity: 56
Merit: 0
May 29, 2011, 09:41:25 PM
#47
Is anyone elses eyebrow a little cocked at the fact that "other" is  75% of hash distribution?(bitcoinwatch.com)  Do we think it is just solo miners or a secret pool of cia super computers trying to destroy the block chain?
Other is everything else that bitcoinwatch isn't directly getting hashrates from. Includes smaller/newer pools that haven't contacted bitcoinwatch to have their pool added yet, solo miners, and, at the moment, it's not calculating slush and deepbit because of various reasons.

There's at least 3 or 4 pools that have popped up recently that bitcoinwatch doesnt track, continuum, bitcoins.lc or whatever, and bitclockers to name a few. The site has no way of knowing about every pool in existence until those pool operators contact bitcoinwatch with a hashrate address for their pool.
newbie
Activity: 52
Merit: 0
May 29, 2011, 09:37:08 PM
#46
You don't have to think that far ahead to realize that even if you get difficulty down for one retarget, it will bounce back with a vengeance when the network compensates with the retarget after that – with the lowered difficulty it would take very few days for the 2K blocks between those retargets to be generated, so there would not be much time to reap any great benefits from the attack.

What about the opposite attack?

Since people like to speculate about governments' displeasure with bitcoin, couldn't they play by the rules, add tons of hashing power to the network, get the difficulty sky-high and then just pack up their marbles and go home?

Block generation time then sky-rockets and thus the elapsed time until a difficulty reset.

Not that I think this scenario likely, but attack motivation may be more than directly economic.
ne1
member
Activity: 84
Merit: 10
May 29, 2011, 09:36:42 PM
#45
Is anyone elses eyebrow a little cocked at the fact that "other" is  75% of hash distribution?(bitcoinwatch.com)  Do we think it is just solo miners or a secret pool of cia super computers trying to destroy the block chain?
member
Activity: 109
Merit: 11
May 29, 2011, 09:25:16 PM
#44
I did some posts on this situation in my thread and in IRC channels.
So whats the scoop?
hero member
Activity: 742
Merit: 500
May 29, 2011, 09:15:02 PM
#43
I did some posts on this situation in my thread and in IRC channels.
newbie
Activity: 28
Merit: 0
May 29, 2011, 08:57:35 PM
#42
They were working fine earlier today... I hope they will be back up. Or if they could post some news? Anyone got any tweets or something from the official deepbit.net?
full member
Activity: 518
Merit: 100
May 29, 2011, 08:42:18 PM
#41
 You don't have to think that far ahead to realize that even if you get difficulty down for one retarget, it will bounce back with a vengeance when the network compensates with the retarget after that – with the lowered difficulty it would take very few days for the 2K blocks between those retargets to be generated, so there would not be much time to reap any great benefits from the attack.

Not that I would put it beyond anyone to try, but I think this is because someone has decided to prove the much-discussed point that having so much of the network's power tied to a few entities is a less than optimal for the health of bitcoin.
member
Activity: 109
Merit: 11
May 29, 2011, 08:32:38 PM
#40
I am happily mining @ Bitcoins.lc  Grin

If this leads to difficulty decrees, then AWESOME!
newbie
Activity: 2
Merit: 0
May 29, 2011, 08:28:19 PM
#39
It's a clever idea to DDOS the major pools in order to decrease difficulty.  However, is that sustainable?  A DDOS would have to continue for a day or more in order to impact difficulty, I'm guessing.  Can anyone provide some math to show how difficulty would be impacted by 50% of the miners were offline for 1 hour, 12 hours, 24 hours, 48 hours, etc?

That should not be a problem. Often, botnets are used to facilitate DDoS attacks. Since the infected computers are most likely spread all around the world, there will always be enough of them online to continue the attack.


After difficulty decreases, watch to see which major new miner or pool comes online.  Perhaps they were responsible.

Well, that would be too obvious. I don't think anyone would be this stupid, but I have underestimated people's stupidity before...


I always thought an easier way to manipulate difficulty would be:  Legitimately take yourself offline, let difficulty decrease, then come back online to generate more coins at lower difficulty.  When difficulty raises, take yourself offline again.  An entire mining pool could do this.  Again, math would be needed to reveal the profitability of such a move.  Mining time lost while offline during high difficulty could be made up by increased profits while online during low difficulty?

But why would you take yourself offline? Even if the increased profits during low-difficulty phases would make up for the profits lost while being offline, it would be more profitable to take out another pool. If another pool goes down, you still benefit from decreased difficulty, but you do not have to stop mining.
And since you can buy access to botnets, there just has to be somebody who is convinced that the additional bitcoins he creates will be worth more than the dollars he paid for the botnet. Or maybe he even paid for the botnet in bitcoins...


Anyway, I will check on deepbit tomorrow. Had my laptop mining for them and was less than 0.011 bitcoins away from payout Sad
newbie
Activity: 29
Merit: 0
May 29, 2011, 08:16:13 PM
#38
It's a clever idea to DDOS the major pools in order to decrease difficulty.  However, is that sustainable?  A DDOS would have to continue for a day or more in order to impact difficulty, I'm guessing.  Can anyone provide some math to show how difficulty would be impacted by 50% of the miners were offline for 1 hour, 12 hours, 24 hours, 48 hours, etc?

After difficulty decreases, watch to see which major new miner or pool comes online.  Perhaps they were responsible.

I always thought an easier way to manipulate difficulty would be:  Legitimately take yourself offline, let difficulty decrease, then come back online to generate more coins at lower difficulty.  When difficulty raises, take yourself offline again.  An entire mining pool could do this.  Again, math would be needed to reveal the profitability of such a move.  Mining time lost while offline during high difficulty could be made up by increased profits while online during low difficulty?
full member
Activity: 227
Merit: 100
May 29, 2011, 08:00:38 PM
#37
I see deepbit as down... now mining @ http://bitclockers.com/ up and running
pool.bitclockers.com 8332
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
May 29, 2011, 07:58:37 PM
#36
firewalls can be optimized and improved to prevent denial of service attacks, perhaps bitcoind could be improved a bit too to decipher good from bad tcp packets on port 8332
newbie
Activity: 35
Merit: 0
May 29, 2011, 07:46:53 PM
#35
perhaps a well equipped hacker or dos kiddie got sick of seeing bitcoin being monopolized.


It does not bother me one bit. my 1 g/hash + is happy over at btcmine.com

mine was happy at deepbit, until it got attacked, so.. ;]

I hope pool owners will take some precautions now..
btw. how can one stop a ddos attack? or defend against it?
full member
Activity: 133
Merit: 100
May 29, 2011, 07:39:45 PM
#34
I hope btcmine or any other pool wont be next
someone is really pissed ... or just bored.



ya cause bidding pond is also down. maybe there were hoping to decrease the difficulty at least for a while
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
May 29, 2011, 07:38:59 PM
#33
perhaps a well equipped hacker or dos kiddie got sick of seeing bitcoin being monopolized.


It does not bother me one bit. my 1 g/hash + is happy over at btcmine.com
newbie
Activity: 35
Merit: 0
May 29, 2011, 07:37:38 PM
#32
I hope btcmine or any other pool wont be next
someone is really pissed ... or just bored.

newbie
Activity: 52
Merit: 0
May 29, 2011, 07:37:18 PM
#31
slush down too?

The website is.  Miners are still getting work.

The interesting question is whether the parts that acknowledge that work and account for it are down with the website or if they are separate.

I was a few confirmations away from receiving a payout at Slush's pool.

I'm leaving the miners up until I see if that comes through or not.

EDIT: And just after posting this the website is back up.  The work of my miners was recorded during the website outage, and two blocks were found since the time of the last successful refresh.
hero member
Activity: 714
Merit: 500
Psi laju, karavani prolaze.
May 29, 2011, 07:35:57 PM
#30
yep.
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