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Author Topic: Today's Feathercoin attack  (Read 1021 times)
TsuyokuNaritai
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May 25, 2013, 03:12:14 PM
 #1

http://forum.feathercoin.com/index.php?topic=797.0

http://forum.feathercoin.com/index.php?topic=815

50 confirms required now on btc-e, apparently it's 100 on cryptonit. Price has tanked & taken CNC down with it.

Any more up-to-date info? Any clues who's behind it?

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StephenJH
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May 25, 2013, 03:21:03 PM
 #2

CNC tanked b4 FTC, get your timeline straight.

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erk
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May 25, 2013, 07:59:00 PM
 #3

Not sure about some of the calculations in that thread:


Quote
I spotted this in several fork. For the one occurring between 32900 and 33000 the attacker had an average time between blocks of 6 minutes.
so according to the 6 minutes between block at 188 difficulty it would take in my estimation 2-2.5Gh/s (thep33t on http://forum.feathercoin.com/index.php?topic=786.0 suggest 2.25Gh/s)



Block 32900 was at timestamp 1369144421

Block 33000 was at timestamp 1369329066

Subtract one from the other and I get 184,645 for 100 blocks or 30.77min per block not 6min. which is a huge time for an attacker between confirmations, also means the hash rate calculation was wrong.

If someone could please double check the timestamps and my figures.


At any rate this should be a warning to devs what can happen if you let your block rate get too long between confirmations.

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