Time Warp exploit na KGW ?

[minerek]

Czy Ktos z Was wie o co konkretnie chodzi ??

As some of you know one of my interest is in testing the security of cryptocoins. Over the past 4 years I have "tested" so many I have lost count but one thing remains true. No matter what the so called improvement is, it always has an exploit.

Kimoto Gravity Well is one such improvement that solves a problem that AUR is having at the moment and that is moving at the speed of death as well purportedly protects against 51%. While KGW does protect somewhat against a 51% attack, it opens up a huge hole in the time warp exploit via the diff adjust first deployed against Geist Geld back in mid 2011 and a modded versions used last year on a few Scrypt coins and SHA coins with great success.

Long story short, KGW opens up a flank where a newly modded Time Warp Exploit can be deployed. I have sandbox tested it on AUR and it seems to do the trick in grand fashion but that is with a small amount of nethash in the sandbox. I need a live chain to test it on. So considering the vast amount of request I have received to take out this 50% premine scam, I thought it would be a good candidate to test on.

Why am I giving notice? Simply because in the past when I use alt coin chains as test subjects, people tend to lose coins. In particular, my ol' buddy Kelsey lost a ton last year in GME LOL. Block 5400 or when ever KGW kicks in will be the starting point. This will give all of you enough time to either cold store your AUR or dump them until the chain is fixed, if it can be after the test.

https://bitcointalk.org/index.php?topic ... msg5550654


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Coins not exempt are
-Clones not older than 8 months. If you cloned another coin and just changed the rewards, your on the list.
-IPO coins.
-Premine grater than 1%.
-Devs that have no idea on what their coin is or how it works.
-Fake coins or coins that clearly have no intention of development.

If you wish to join this group PM me but preferably you must be a senior member or greater and been a member for longer than 8 months.

To make it easier I will start this list of coins/services that seriously need to be terminated.


Greececoin- https://bitcointalk.org/index.php?topic=516955.0 50% premine, No Greek Client, No Greek site, No nothing.
UK Coin- https://bitcointalk.org/index.php?topic=519571.0
Spaincoin https://bitcointalk.org/index.php?topic=500511.0
Auroracoin https://bitcointalk.org/index.php?topic=446062.0
h20coin https://bitcointalk.org/index.php?topic=494229.0;all
Coin for Money https://bitcointalk.org/index.php?topic=522200.0
Coin Creator https://bitcointalk.org/index.php?topic=450543.0

https://bitcointalk.org/index.php?topic=522235.0


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MaxCoin @maxcoinproject

Please update your #MaxCoin clients ASAP. We are hard forking from block 167500 to fix the Time Warp exploit in KGW.

[rav3n_pl]

Coś podobnego było na TRC, gdzie atakujący robił bloki ze zmienionym timestampem który powodował niski diff.
A time-travel bug jest znany "od zawsze".

[minerek]

A wszystko jasne - dziękuję za wyjaśnienie. Opór jest bezcelowy - to nabiera zupełnie nowego wymiaru w kontekscie kryptowalut.