Someone is throwing FUD around,  BOD really doesn't have an exploit.  What happened in 2014 is that Dev was trying to fine-tune the network each month BACK IN 2014.  and ended up creating four hard forks (one each month during June - August 2014).  those forks went into Yobit and there are a bunch of coins in there saturating the price.    overall, it's not an exploit it was an over-zealous Dev. 

Since then, the network has been stable, =  up until the last 24 hours.  as someone rented a big miner and now is taking down all the blocks.   

I know all this stuff,  because i'm the predominate  miner of this coin since March of 2017.  - keeping nodes, Masternodes, and miners up.   (until this recent miner came in)

further, whoever is the current big miner,  will eventually slow down, as his hash hash is about cost of $100,000 per year.  -  so this person must of dumped .5 - 1BTC into the current hashing power.   

In summary to mining, a fair difficulty for this coin is between 3 and 10.   (current difficultly about 35 - 45 as of this writing)
-T