moneyart



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NewbieActivity: 26Merit: 0 Re: Cheap way to attack blockchain November 24, 2015, 04:08:36 PM #83 Quote Governments do not need to "destroy" bitcoin.

Because there is no danger from it.

Governments steal our money but because they have to pay so much interest on debt there is no money left for a bitcoin attack.



By the way, politicians still dont understand what Bitcoin is. Good for us, because when criminals dont understand something they dont want to steal it. Governments steal our money but because they have to pay so much interest on debt there is no money left for a bitcoin attack.By the way, politicians still dont understand what Bitcoin is. Good for us, because when criminals dont understand something they dont want to steal it.

junglist.massive



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Hero MemberActivity: 760Merit: 500 Re: Cheap way to attack blockchain November 24, 2015, 08:31:31 PM #85 that kind of spamming will be really popular in future. If you add some text to each transaction and send it, it will works same as email spam

enthus



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Full MemberActivity: 140Merit: 100 Re: Cheap way to attack blockchain November 28, 2015, 02:36:02 AM #93 Quote from: fairglu on August 31, 2015, 08:17:44 AM Quote from: amaclin on August 31, 2015, 07:58:03 AM

88 transactions (attack one block) will cost only 0.0396 BTC

Daily attack 5.7024 BTC - not a big deal



Wanna hire me for this dirty job?

Each such transaction costs 0.00045 for dishonest attacker (can be even less)88 transactions (attack one block) will cost only 0.0396 BTCDaily attack 5.7024 BTC - not a big dealWanna hire me for this dirty job?

Main "weakness" for this attack is that miners could easily just ignore those transactions, without involving any hard fork.



Only the pools that accept those transactions *and* that do not prioritize transactions in a block by total fee would be impacted, pools that build their blocks based on max fee they can rack in a block would automatically eliminate them, they may just need to take the SIGOPS limit into their block optimization code, but that's all.



In practice only the "faucet pools", those that accept zero-fee tx and do not prioritize tx would likely feel the attack.



So the practical spamming would be limited to relaying and the mempool, so no biggy.

Main "weakness" for this attack is that miners could easily just ignore those transactions, without involving any hard fork.Only the pools that accept those transactions *and* that do not prioritize transactions in a block by total fee would be impacted, pools that build their blocks based on max fee they can rack in a block would automatically eliminate them, they may just need to take the SIGOPS limit into their block optimization code, but that's all.In practice only the "faucet pools", those that accept zero-fee tx and do not prioritize tx would likely feel the attack.So the practical spamming would be limited to relaying and the mempool, so no biggy. Yes this is right...once problem is identified it is easy for miners to ignore and fix the attack.

moneyart



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NewbieActivity: 26Merit: 0 Re: Cheap way to attack blockchain November 28, 2015, 11:57:58 AM #94 Quote You either dont understand what Bitcoin is Grin

I wrote my Bachelor Thesis about Bitcoin and developed a Paper Wallet site: moneyart.info

I know a lot about Bitcoin. I wrote my Bachelor Thesis about Bitcoin and developed a Paper Wallet site: moneyart.infoI know a lot about Bitcoin.

lama-hunter



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Sr. MemberActivity: 266Merit: 250 Re: Cheap way to attack blockchain November 29, 2015, 02:24:39 AM #97 or simply a slowment/decrease of included tx?

I just know back in Time hwen an transaction took about 14 Days out from Coinbase :D that was akward lol



regards

lama-hunter Is it really a atack of the Blockchainor simply a slowment/decrease of included tx?I just know back in Time hwen an transaction took about 14 Days out from Coinbase:D that was akward lolregardslama-hunter