I have not found a specific reliable source which lists any coins, but this would be a legitimate cause for concern. Until I see some definitive news, I'm holding my position. Neo is my biggest position besides ETH and BTC as I'm invested in that token....but from the info i've gathered (reddit, mainly) it seems to be in a safe position for now. However, first sign of trouble I do plan to pull out. Unfortunately, I won't have time to put any updates here so please trade with CAUTION. Trade only with BTCs and ETH if you don't feel comfortable.