Network Attack on XVG / VERGE

[ocminer]

Final analysis is in here:

https://ocminer.medium.com/the-xvg-verge-attack-74c6d64e621

and in here

https://github.com/zawy12/difficulty-algorithms/issues/68


Thanks @ zawy for second opinion and thoroughly examination of the log

[zawy]

I only know about difficulty algorithms and timestamps. This lets us know the attacker spent less than $1 to get the 567,000 blocks. The important question remains. Why were nodes rejecting the public chain for the attacker's chain that had less work?  Simply saying the attacker spun up a lot of nodes for a Sybil attack is not sufficient. The whole point of POW is to prevent that kind of problem.  What did Verge change in BTC's node communications or most-work tip selection that makes this attack possible?

[Deff]

 This means the code has not been fixed until today.
"nActualTimeInterval" - it can still take a value less than 0.

It took about seven to twelve days to generate 560,000 blocks.