An attacker with some small hashpower isolates you (as an individual) from the network by MITMing your network. You just switch the the attackers chain as if nothing happened because of the network rule that defines it as OK. Today, you will see that you're behind and warn the user.
Was it really so hard to write a three-sentence paragraph to clarify the attack instead of insulting people? Still, posting ideas here without spending time to ensure you understand the Bitcoin network well is frowned upon. Matt On 12/23/13 17:51, Ryan Carboni wrote: > I think you misunderstood my statement. If time > 3 days, and after > 4 blocks have been mined, then difficulty would be reset. > > In theory, one would have to isolate roughly one percent of the > Bitcoin network's hashing power to do so. Which would indicate an > attack by a state actor as opposed to anything else. Arguably, the > safest way to run Bitcoin is through a proprietary dial-up > network. > > > On Sun, Dec 22, 2013 at 7:22 PM, Mark Friedenbach > <m...@monetize.io <mailto:m...@monetize.io>> wrote: > > Ryan, these sort of adjustments introduce security risks. If you > were isolated from the main chain by a low-hashpower attacker, how > would you know? They'd need just three days without you noticing > that network block generation has stalled - maybe they wait for a > long weekend - then after that the block rate is normal but > completely controlled by the attacker (and isolated from mainnet). > > There are fast acting alternative difficulty adjustment algorithms > being explored by some alts, such as the 9-block interval, > 144-block window, Parks-McClellan FIR filter used by Freicoin to > recover from just such a mining bubble. If it were to happen to > bitcoin, there would be sophisticated alternative to turn to, and > enough time to make the change. > > On 12/22/2013 07:10 PM, Ryan Carboni wrote: >> I think Bitcoin should have a sanity check: after three days if >> only four blocks have been mined, difficulty should be adjusted >> downwards. > >> This might become important in the near future. I project a >> Bitcoin mining bubble. > > > > > > ------------------------------------------------------------------------------ > > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application > performance affects their revenue. With AppDynamics, you get 100% > visibility into your Java,.NET, & PHP application. Start your > 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > > > > > _______________________________________________ Bitcoin-development > mailing list Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
