I think C-Cex is a problem.
In the past three days, 30,000 blocks have been created.
This is seen as the result of the testamp attack.
No matter how much we mine, only hackers eventually laugh.
C-Cex is Ver3.6.0
Compare blocks and C-Cex blocks on the uscoin site.
I am patched with Ver 4.1.0 There is no transaction with C-Cex.
Why do they not patch?
Eventually, hardforked chains like C-Cex will be broken.

https://c-cex.com/?p=wthc-btc
http://block.withcoin.biz:3001/